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Патент USA US2134105

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Od- 25, 1938~
Filed May 24, 1957
2 Sheets-Sheet 1
Oct. 25, 1938.
Filed May 24, 1937'
2 Sheets-Sheet 2
Patented Oct. 25,
2.134.105 '
Harry I. Criner, Davenport, Iowa, assignor of
one-half to A‘. G. Bulb, Davenport, Iowa '
Application May 24,‘ 1937, Serial No.‘ 144,351‘
9 Claims. '(01. 146-88)
guide the blades, I mount upper
My invention relates to improvements in bread
and lower guide assemblies equally spaced above
slicing machines of the band-blade type.
The objects of my invention are to provide
simple, improved, adjustable and unitary means
5 for simultaneously feeding the bread to the cut
ting blades andifor guiding the bread and main-v
taining it at the proper ‘level for slicing it v‘to the
best advantageyalso to'provide asimple, easily
adjustable unit for feeding vthe bread to the
10. blades, guiding the bread while being ‘sliced and
for guiding the blades during the slicing portion
of their travel.
I attain these objects by the means ‘illustrated,
. in the accompanying drawings, in which,—
Figure 1 is a side elevation of myfapparatus
fromthe right of Figure 2:
4 ' f I
Figure 2' is an end elevation showing the dis
charge end of the apparatus;
Figure 3 is a detail showing anend elevation
3° of a portion oi’ the feed end oi'the machine;
Figure 4 is an enlarged detail showing a‘plan
view of the crossbar carrying the guide ?ngers:
Figure 5 is a detail plan view of the lower feed
and discharge belts or aprons, and ' the‘ lower
and below the crossing point oi the blades.
These guide assemblies comprise crossbars, 32',
and “I, which are slidingly mounted upon shafts, 5
3i’ and 43, respectively, and may be secured in
place by set screws or’other suitable means.
‘Extending to the rear from the crossbars, l2’,
and 44, are ' pluralities of ?ngers, 'II and 32.
These ?ngers are ?tted in ‘the crossbars by a 10
press-?t or other suitable means, and may be
plain steel pins hardened ‘to a glass hardness, or
alternate pins, as shown in Figure 4‘, may be pro
vided with rolls, 58, interposed between the por
tions of a given cutting blade traveling in opposite 15
directions, so ‘as to give a rolling cantact with
the blade. If desired, these rolls may be provided
with needle bearings as shown in Figures 6 and 7,
in which a plurality of needles or small rods, 58',
are spaced about a pivot pin, 59, about which 20
they may revolve. A cap, til, may be pressed
upon the end of the pivot, I9, to secure the nee
dles in place. If desired,.all of the ?ngers, 3i and
32, may be provided with similar rolls.
The shafts, 3i’ and ,43, have their inner ends 25
5 guide assembly showing the frame of the machine,
mounted in brackets, 8 and 8'. These brackets
in section on the line 5-5 of Figure 2:
are suitably united to vertical stub-shafts, I0" and
. Figure 6 isfanenlarged detail showing an al
ternate form 01 guide in which needle bearings II, which are slidingly" mounted in bosses, 6 and.
‘I, formed integral with or suitably united to the
Figure '7 is an enlargedsectional detailon the colum ,, I. Set screws, l3 and II, are mounted 3°
in‘the bosses, 6 and ‘I, and are adapted to lock the
line T|-'| 01’ Figure 6.
' _
Similar numerals , refer to similar ' parts shafts, III and II,‘ in ?xed vertical and angular
throughout the several views- _
A '
My machine comprises a base, 4, with extended
The bracket,‘ Q, has suitably mounted therein
a main bearing boss, 15, formed integral therewith
in which a horizontal'shaft, 29, is mounted, which
a pulley, 39, revolvably mounted upon a’, shaft,
35 feet, 5, formed'integral therewithv and with a a shaft, 38, which carries a feed. belt pulley, 81, 35
vertical column, I,v prei'erably'T-shaped' in sec revolvably mounted thereon, which supports and
tion, suitably united thereto. The column, I, has ‘carries'theinner end of the feed belt, 50.
' 40 extends the full width oi the machine, and one
end of which projects outside of the column, I,
and carries adrive pulley, 34, thereon, which
may be driven by a belt, 35, actuated by a drive
The outer end of‘the feed belt, 50', passes over‘ a
to, which is rigidly mounted in the outer end of 4°
an arm, 38, the inner end of which is pivoted to
the bracket or casting, I, by the shaft, 38.‘
' The bracket, 8’, has united thereto a shaft, ‘42,
pulley, 54, mounted upon theshaft, ",0! a ‘which carries the feed belt pulley, 4i, revolvably- '45
45 motor, 53, which may be united to the base, I, ‘by
any suitable means. '
,Upon the shaft, 29, is mounted a‘ cylindrical
pulley, 28, which may be of any of the forms well
known and in common use. Upon the upper end
50 of the column, i, I formv a boss, 2, which has
, mounted therein a shaft, 21, which carries'a
pulley, 28, revolvably mounted thereoncorre
,, ‘sponding to the pulley, 2|, and, over the pulleys,
2t and 20, a plurality. of cutting band-blades; ill,
I‘ are mounted in substantially?gure 8 form.
mounted thereon over which the inner end ‘of
the feed belt, 50', passes.
_ The outer end of the lower teed belt, 50’, passes
over a pulley, 20", revolvably mounted upon the
shaft,“ II". This shaftis secured in suitable 50
bearings, 48 and '48’, mounted upon or formed
integral with a bracket, 49, which in turn may be
supported by diagonal brace-rods, 5|» and'il', the
upper ends of which may be bolted to thebracket,
4|, by, bolts, I2 and I2’, and the lower ends of; 55
sary movement of the conveyor assemblies in
which may be secured to the base by bolts, It, or
to any other suitable point of attachment.
adjusting the heights thereof for different lined
loaves of bread and if greater adjustments are
The ?ngers, ti and it, extend toward the rear
required than the elasticity of these belts psr- ‘
of the machine as shown in Figure 1, so as to con.
mits, belts, 4t and '1, may be replaced by longer I
or shorter belts as required to meet the require
tact the cutting blades, 80. '
A discharge conveyor comprises a lower con
ments of each particular case.
veyor belt, "a, which is carried by and passes
over pulleys, It and 2|’, revolvably mounted upon
shafts, Ii and II’; The inner ends, of the
10 shafts, 2| and II’, are rigidly mounted in the
and‘ as desired, and sprocket-wheels substituted l0
ends of the arm or casting, ii, the inner end of
for the pulleys.
which is united to the casting ‘or bracket, I’,
An arm, ll, has one end pivotally united to the .
rear end of the bracket, 0, upon the shaft, II,
ll and carries a shaft, I‘I. Cylindrical pulleys, It.
and II, are revolvably mounted upon the shafts,
Sprocket chains may be substituted for the
belts, “a, 48, II’ and II, or any of them, when
- .l
1. In a band-blade bread slicing machine the
combination with a frame, of spaced cylindrical
pulleys revolvably mounted upon the frame, a
plurality of endless‘ band-blades mounted upon
i1 and II, and carry a conveyor belt, II’.
The arm, II, and the bracket 8', are preferably
united in a straight, horizontal line, while the,
outer ends of the arms, It and I‘, are preferably
inclined upwardly from the bracket, I.
A ‘drive belt, 61, passing over suitablepulleys
upon the shafts, II and II, is utilized to drive
the discharge conveyor belts simultaneously and
a drive belt, “a, passing over suitable pulleys
on the shafts, II and 40, transmits power from
contact respectively the lower and upper sur
, the discharge driving apparatus to the feed driv
ing apparatus. A drive belt, 40,v passing over
suitable pulleys mounted upon the shafts, ll
and 2|’, is used to drive the feed belt, II’.
A drive belt, 2!’, passing over a pulley, II,
upon the shaft, 2|, may be utilizedas a source of
power to drive the entire feed and discharge
adjustablymounted upon the frame spaced to
- faces of the loaves of bread as they advance to
cutting position and to carry the bread forward
with the middle of the respective loaves at the
level of the crossing points of the blades, upper
and lower guide assemblies for the blades corre
sponding in height to the feed belts and each
comprising a transverse bar having a plurality
of spaced ?ngers united thereto to space‘ and
guide the blades at ‘equal distances above and
below their crossing point, and unitary means to
respectively adjust uniformly the height 'of each I
guide assembly‘and its corresponding feed belt
. 72., A band-blade slicing machine comprising a
frame, spaced cylindrical pulleys mounted upon
the frame, a plurality of endless band-blades I
In the operation of my machine, the machine
is ?rst set up with the cutting blades,.3l, mounted
upon thev pulleys, It and 20, in ?gure 8 form.
When the pulleys, 2| and II, are of the same
size, the crossing pointv of the blades will be
mounted upon the pulleys in ?gure 8 position,
upper and lower supporting bracketsgslidingly
mounted upon the frame, set screws threaded
midway between the shafts, 21 and 28, but when
desired for any reason to use a larger pulley upon
justed vertical position, guide bars united to the Q
brackets extending transversely'of the machine
one of the shafts, the crossing point will be varied
parallel to the series of blades, hardened ?ngers
In the slicing of bread by band-blade machines
where the blades are crossed, it is very important
into the frame for securing the brackets in ad- _
mounted. upon the guide bars extending rear
wardly between the blades and to contact space
and guide the blades while ,slicingand to simul
to have the loaves held at a point where the taneously guide the bread to and across the
middle of the loaf is on a level with the crossing blades, feed and discharge conveyor shafts rigidly
point of the cutting blades or ;at such a height secured in the supporting" brackets with conveyor
that the descending and ascending portions of ‘ pulleys revolvably mounted thereon to support ,
the blades will contact a given loaf of bread at spaced feed and discharge conveyor belts carried ‘0
the same instant so that the upward pull will by said'pulleys, and means for driving the blades
be equalized by the downward pull upon the loaf. and the conveyor belts.
3; In a bread slicing machine of the multiple,
Accordingly, the height of the lower .feed
assembly and of the upper feed assembly, which crossed band-blade type, the combination with a
55 also acts as-a guide ordetent for the bread, will ‘frame and a plurality ,of blades operatively 55
be adjusted to correspond to the height of they mounted .thereon, of a supporting bracket slid
loaves to be sliced and so that ‘the middle of the ingly ‘ mounted upon the frame, a set screw
loaves as they travel forward, will be on a level threaded in the frame forv securing the bracket
in adjusted vertical position, a guide bar united
with the crossing point of the blades.
The upper guide and conveyor assembly, as to the bracket extending transversely" of the Q
shown, can act, if necessary, to slightly compress machine parallel to the series of blades, hardened a loaf vertically in case any given loaf is a little ?ngers mounted upon the guide bar extending
higher than the regular run of loaves being cut. rearwardlyv between the blades and adapted to
a and the form of the discharge guide assembly guide the blades during their travel, and to con
as will'permit the loaf to spring back and assume tact and guide'the bread across'the blades,a pair .5
of conveyor shafts rigidly secured in the support
its natural shape as it leaves the discharge con
The upper ‘feed and discharge conveyors are
‘inclined upwardly away from the cutting blades
70 and this form of construction will permit the
belt or chain, ‘5a, to secure the outer'ends'of the
~ ‘arms, I‘ and It, in their upwardly inclined posi
tions without other support.
The belts, Ila, 48, II’ and 51, are made with
78 a su?lcient degree of elasticity to permit neces
ing bracket with conveyor pulleys revolvabiy
mounted thereon, a conveyor belt carried by said
pulleys, to carry the bread to the blades, means
for driving the‘blades and the conveyor belt.
4. In a bread slicing machine of the multiple‘,
crossed band-blade type, a frame, a supporting
bracket slidingly mounted upon the frame, set
screws for securing the bracket in adjusted verti
v cal position, a guide bar united to the bracket ex- 76
tending transversely of the machine parallel to
the‘ series of blades, hardened ?ngers mounted
upon the guide bar extending rearwardly between
and guide the blades while slicing united to ‘and
carried by the said upper and lower supports re
spectively, and means for separately adjusting
and ?xing the relative positions of said supports
the blades and to guide the blades and the bread
upon the frame.
while undergoing slicing, feed conveyor shafts rig
'7. In a bread slicing machine of the multiple,
idly secured in the supporting bracket with con
veyor pulleys revolvably mounted thereon, a feed crossed band-blade type, the combination with a
conveyor belt carried by the pulleys, a pair of ‘frame' and a plurality of blades operatively
' parallel discharge conveyor shafts rigidly mounted mounted thereon, of a blade guide comprising a
crossbar having a plurality\ of projecting ?ngers 10
10 in the supporting bracket having pulleys revolva
bly mounted thereon with a discharge conveyor secured thereon comprising needle bearings and
belt carried thereby, and means for driving the hardened rolls rotatably mounted on the bearings
to space andguide the cutting blades. blades and the conveyor belts simultaneously.
5. In a bread slicing machine of the multiple, band-blade
8. In a' bread
the combination
machine of with
the multiple,
aframe 15
15 crossed band-blade type‘, the combination'with' a
frame and a1 plurality of blades operatively and a plurality of blades operatlvely mounted
mounted thereon, of upper and lower vertically
adjustable supports slidingly mounted upon the
thereon, of a blade guide comprising-a crossbar ; , ‘
having a plurality of ‘projecting ?ngers secured
thereon each comprising a needle bearing and
a hardened roll rotatably mounted thereon to v20
space and guide the cutting blades.
9. In a bread slicing machine of the multiple,
ing ?ngers to contact space and guide the, blades
while slicing united to and carried ‘by the‘ said ' crossed band-blade type, the combination, witha
frame, set screws to secure them in ?xed position
20 thereon, upper and lower feed and discharge con
veyors and upper and lower guide assemblies hav
upper and lower supports respectively, and means
25 for separately adjusting and ?xing the relative‘
positions of said supports upon the frame at
points equi-distant from the the crossing points of
the blades.
6. In a bread slicing machine of themultiple,
30 crossed band-blade type, the combination with a
frame and a plurality of blades operatively.
frame and a plurality of blades operatively
mounted thereon, of upper, and lower vertically 25’
adjustable supports mounted upon the frame,
upper and lower feed and discharge conveyors and
upper and lower guide assemblies each compris
ing a transverse bar having, a plurality of hard
ened ?ngers extending rearwardly between- and 30
past the blades and each of said ?ngers being
mounted thereon, of upper and lower‘ vertically provided with needle bearing-rolls, adapted to
adjustable supports mounted upon the frame,‘ space and guide the blades while slicing, united to
upper and lower feed and discharge conveyors and and carried by the said upper and lower supports
upper and lower guide assemblies each comprising respectively, and means for separately adjusting 35
a transverse bar having a plurality of hardened and ?xing the relative positions of said supports
?ngers extending rearwardiy between and past upon the frame.
the blades and the alternate ?ngers being pro
vided with needle bearing rolls, adapted to space
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