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Патент USA US2110290

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March 8, 1938.
2,1 10,290
Filed Feb. 19, 1937‘
‘Patented Mar. 8, 1938
Harry J. Criner, Davenport, Iowa, 'assignor of
one-half to A. G. Bush, Davenporhlowa
Application February 19, 1937, Serial No. 126,613
11 Claims. (Cl. 146-88)
My invention relates to improvements in bread the shaft, II, is revolvably mounted a resilient
slicing machines, and while primarily designed cylindrical pulley, 8. A similar ‘hub, 3, is cast
for band-blade machines, -may be used on the integral with or'united to the lower end of the
reciprocating type.
frame in which one end of the shaft, I0, is mount
The objects of my invention are:
To provide a bread slicing machine having
simple and effective means for guiding and gaug
ing the cutting blades and for quicklyand easily
changing the gauge or spacing of the guides and
10 blades; to provide a simple, easily operated meth
od of varying the gauge" of multiple slicing blades;
to provide means and a method to automatically '
space and gauge the slicing blades uniformly;
and to provide means and a method for readily
l5 changing the gauge of the slicing blades while
the machine is in motion, and without stopping
6, by any‘suitable means.
A resilient cylindrical pulley, 9, is revolvably 10
mounted upon the opposite end of the shaft, I I).
Band-blades, II, which may be crossed in ?gure
8 form as shown in‘ Figure 1, are mounted upon
the cylindrical pulleys, 8 and 9, and travel there- ‘
Near the middle of the frame, I, I form hubs,
4 and 5, which may be cast integral with the web,
trated in the accompanying drawing, in which;—
or other suitable means.
Figure 1 is a side elevation of my machine
Figure 3 is an enlarged sectional detail on the
line 3-3 of Figure 1, but showing a part of the
hub, 4, in section on the middle line thereof and
omitting the lower half of the machine;
Figure 4 is an enlarged end view of they upper
guide assembly;
Figure 5 is a detail showing the side elevation
of one of the guide-supporting members and the
spring adjacent thereto;
belt, I5, driven byv the drive pulley,‘ I5’, of the
motor, I6’, which may be secured upon the base,
the machine nor removing any part of it.
I accomplish these objects by the means illus
taken from the right of Figure 2;
Figure 2 is a front elevation of my machine
taken from the left of Figure 1, but with a part
of the cutting blades and the bread chute
25 omitted;
ed and a drive-wheel, I6, is mounted upon one 5
end of the shaft, I0, which can be actuated by a
Figure 6 is an enlarged detail showing a plan
View of one of the guide-supporting members and
Figure '7 is an enlarged detail showing an end
view of the upper guide assembly in an alternative
40 position in which the guide ?ngers are located
so as to form a guide or detent for the bread
while being sliced, to' prevent upward displace
ment thereof.
My invention comprises a frame, I, preferably
45 formed of cast-iron, having a T-shaped' column
with web, 'I ', base, 6, and extended feet, 1, formed
integral therewith. An upper ,hub, 2, is united to
or cast integral with the column,'I, and has an
eccentric bearing, I2, mounted therein which car
50 ries an eccentric casting, I3, in which the shaft,
II, is rigidly secured.
A handle, I4, is united to the casting I3, by
which the casting, I3, can be turned in the ec
I’, or secured thereto by an arm or bracket, I”.
In the upper hub, 4, I mount rigidly a rod or 20
shaft, 2 I, which is free to slide lengthwise iii the
hub, 4, but which is secured against rotation
by a key, 30, which is somewhat shorter than the
slot, 3_I, in which it is secured, a corresponding
slot being formed in the hub, 4, so as to prevent 25
rotational movement of the key, 30. '
Upon‘the bar or shaft, 2|, I mount slidingly
a plurality of guide supports, I9, which are sub
stantially annular, but are formed with a tan;
gential hub, I9a, in which the inner end, 20, of 30
a guide ?nger, I8, is secured by a press-?t or by
threading or by other suitable means. The guide
?nger, I8, has a narrow slot, Il','cut in its outer
end to form a guide for a band-blade to travel
therein. The ?ngers, I8, are preferably made 35
of steel hardened to a glasslike hardness, and
the outer ends of the ?ngers, I8, are hollowed
along the line of the slot, I'Ip', so as to facilitate
entrance of the blades.
The innermost guide-supporting member has 40'
a hub, 24, formed integral therewith which ex
tends into a suitable opening formed in the inner
end of the hub, 4. A pin, 21, is'secured in the
hub, 4, the inner end of which extends into a
groove, 28, formed in the periphery of the hub, 45
24, and locks the hub, 24, against movement lon
gitudinally out of the hub, 4.
The outermost supporting member, 19, has a
pin, 2|’, secured therein which passes through
thexend of the shaft, 2|, and locks said support- 50
ing member against movement thereon.
Intermediate the inner and outer supportingv
members, I mount a plurality of similar support
centric bearing so as‘to raise or lower the shaft, , ing members upon the shaft, 22, which are sepa
55 I I, to tighten or loosen the cutting blades. Upon rated by cupped springs, 36, which are preferably 55
_ _
thesupporting members, II and II’. to trsvelin
msyhe ouppedsnn?nrplsteswith
urullty oi
identical vertical planes.
The inner supporting member. ll’, is'seoured
s tote the springsotion thereof, or msyhe made
in plaeeby gpinJi, inlthesiunemnnner ssthe
oorrespondinguppersupportlng mernherlsse- s_
cured. The outer supporting member, ‘II’. is
‘We; springs. as. sreg'm'slidahle longi
tudinnlly upon
shsit'fi'l. but'ere secured
28, by a pin, 1|.
f I‘
'1he lower hub, ‘a, my have I head wheel.
10 against rotation thereon by s' spline or hey?l. ' ll’, 'tormed integral therewith by w
which extends longitudinally of the shaft. 2|,end bemnnuslly turnedsothetthechsin, “.csn
isrlgidly securedinnsuiteble-slot II’. MW" be omitted when desired, in which case
in.‘ The supporting members,il, nndspring,‘ 8t,‘ _
ueslotted tointsndmoveireelyuponthespline.
independently otthe other.
15 22. The sprints, 80, are formed of substsn?nlly,
A feed chuteJ‘Lmny have its lower end
the-some weight and resistance so thnttheywill
to the Itrnme‘by s bolt, 48. or other suitable
means, and the outer portion of the chute msy_ '
porting members. it, and space them uniformly
upon the shaft, 2i,
ll '
to the ire-me, I, by :1 suitable brscket, 4|, secured
> besupported by ‘a. brace, is. which may beinthe '
iormotastraporberoiironoraplateextend- 20
strength to move vthe supporting members, it, ,ingthetullwidthoithemnchineendtheends
freely upon the shsit, 2i. and the supporting or which maybe secured to the feed chute. II.
The sprlngs,',8l. are
made , ‘withf, sumoient
‘members ere preferably made of su?iciently light and ‘tgot, ‘I, respectively. by bolts or rivets- 8|
weight and ?tted loosely enough upon the shaft.‘
An oil-hearing chute, Ii, may be secured to 25
2‘ Ii, so as tomove‘i'reely thereon in "890w to__
- -the spring pressure.
-A wheel, I‘, isthreeded upon threads, lif, cut,
in the enderuie
II, which projects out
to one of the feet, ‘I, by a bolt, 44. .
‘o "theIncutting
order blades,
to contract
the wheel,
or nsr'ro'w‘the
new beguide
‘of _
In the operation of mymachine, the bomb, ll,
be placed over and around the pulleys, l
sndtinilgureiiorm. Theshsits, Ii end”,
so'thntthethrendthes'eo! will exerttrection
upon the shaft, II, and draw the shaft to the
lleftasinl'lgure?. Thiswillshorten the'speee
‘5 betweentheoutermostmpport, ll,whichisiixed
l, nndthesupportingmembersspsoed
secured in
the desired position by must-'86
mentoi’ the wheels I‘ and II’.
‘lingers, iigsndoonsequentlythecuttingblsdes,
.i'l, to movecloser together. thus nsrrowim the '
2 E
thinner slices’
5 8'
pins, Ii’, and the compressibility trsvel-otthe
ere hept from rotation e, s‘spline, scum
“' endoi thevshsi't, II, which extends through the
.2 5%
iii-g5 8532:ii
When it becomes necessary to replace a ,blade,
it is a simple matter to loosen the blades by turn
ing the-handle, l4, and moving the blades along
from right to left as necessary and adding the
required blades at the right of‘ the machine as
shown in Figure 2, or the pins, 2|’ and 29, may be
removed from the ends of the shafts, 2| and’23,
and the shafts drawn out through the hubs, 4 and
5, as far as necessary to make therequired re
" 3
prising a base, a side frame united thereto, upper
and‘ lower pulleys revolvably mounted upon the
frame at or ‘near the top and‘ bottom thereof, a
‘transverse boss cast integral with the frame inter
mediate ‘the pulleys, a transverse shaft slidably‘
mounted in the boss and secured against turning
therein by a key or other suitable means, a hand
operable wheel threaded upon one end of the shaft
vadjacent and bearing against the outer endof the
boss, a plurality of slotted guide members spiined
It should be noted that both my method of upon the shaft, the outermost member being pin
changing the gauge and the mechanism described, ned to the shaft and the innermost member being
is applicable not only to crossed blades as shown I pinned to the boss, and the intermediate members
in the drawing, but is also applicable to un
15 crossed blades such as are shown in the alternative
?gures in my application for patent, Serial No.
being slidable lengthwise ‘upon the shaft, com-_
press'ion‘sp'rings splined upon the shaft and slid 15
able lengthwise thereon being'interposed between
the successive guide members and adapted to
I prefer to use the form of guide shown in exert uniform pressure thereon'in opposite direc
Figure '7 for the upper guides so that the ‘bread tions, and means for driving the pulleys.
20 will pass along the lower edge of the ?ngers, ‘l8,
3. In a bread slicing machine having a frame, 20
of the upper'guide members and be restrained and a pair of spaced pulleysrevolvably mounted
from vertical movement thereby. At the same thereon with a plurality of band-blades, carried or
time, the bread will move along and upon the driven by the pulleys, a<blade gauging mecha
lower ?ngers, l8’, and be supported thereby while , nism comprising a transverse shaft slidably
being sliced.
It is obvious that the supporting members may
be located either at the front or rear of the cutting
blades, but I prefer to locate them at the front
mounted in the frame, a plurality ofguide mem
bers slidably mounted upon the shaft ,adapted to
space and guide the blades, compression springs
slidably mounted upon the shaft in alternation
of the cutting blades as shown ‘in Figure 1, so with the guide members and adapted to exert
pressure -,upon'the adjacent guide members in 30
that the bread will pass smoothly from the sup
porting members onto the ?ngers, I 8', and pre v opposite directions, and means uniting the outer
vent any catching or hesitation of the bread which most guide member in ?xed positionpupon the
might occur in case the upper surface of the
?ngers, I 8','was not quite as- high as the upper
surface of the hub, I 9a, of the supporting members.
The guidev assemblies above described. are
designed for use with both ‘band-blade slicing ma
4. In combination. with a bread slicing ma
chine having a frame and a pairfof spaced pulleys 35
revolvably mounted thereonlwith a ‘plurality of
band-blades mounted upon the pulleys, unitary
means for spacing and guiding said blades inter
mediate ‘the pulleys, said means comprising a pair
of spaced units each unit containing a plurality of 40
suitable changes will have to ‘be made in the, guiding members, resilient means interposed be
suspensionor supports for the‘ blades so as to tween the guiding members respectively adapted
chines and reciprocating bladed machines, al
40 though in the case of reciprocating machines,
permit free lateral movement thereof to corre
spond to the movement of the guides.
Another convenient method for replacing a
broken blade is to draw the key, 30, and when
the key, 30, is removed, it will permit the shaft,
2|, to revolve so that the ?ngers, It’, may be
withdrawn from contact with the blades. The
50 same course may be followed with reference to
to contract or expand uniformly'upon pressure
being varied upon the opposed ends of the series.
5. In a bread slicing machine having a frame 45
carrying a pair of spaced pulleys revolvably
mounted thereon with a plurality of band-blades
carried or driven by the pulleys, a blade gauging
mechanism comprising a transverse shaft slid
ably mounted in the frame intermediate the pul 50
leys'parallel to the‘plane of travel of the blades,
the shaft, 23.
It is obvious that various modi?cations of form‘ , a plurality of guide members slidably mounted
and position may be made without departing from upon the shaft, the outermost guide member be
the spirit of my invention and I do not limit my ing rigidly united to the shaft and the inner
55 claims to the precise form of apparatus shown most guide member being ?xedly united to the 65
in the drawing nor my method to performance frame, compression springs slidably mounted
,upon the shaft in alternation with the guide
by the precise form of mechanism here shown.
Itis likewise obvious that my invention need not members and adapted to exercise pressure upon
be limited to bread slicing machines, but may the adjacent guide members in opposite'dlrec
be applied to machines of various types using tions, a hand wheel threaded upon the shaft with 60
a pluralityof blades which require adjustable its hub bearing against the frame adapted to
draw the shaft inwardly so as to compress the
or variable spacing. _
I claim:
1. In a multiple bladed bread slicing machine,
65 a blade gauging mechanism comprising a shaft
mounted parallel to the plane of travel of the
blades, a plin'ality of slotted guide members slid
ably mounted upon the shaft adapted to engage,
space and guide the blades, compression springs
70 slidably mounted upon the shaft in alternation
with the guide members and reversible means for
contracting the spacing of the guide members or
for allowing the springs to expand the spacing
2. A multiple band-blade slicing machine com
6. In a bread slicing machine having a frame
carrying a pair of spaced pulleys revolvably 65
mounted thereon with a plurality of band~blades
carried or driven by thepulleys, a blade gaug
ing mechanism comprising a transverse shaft
slidably mounted in the frame intermediate the
pulleys parallel to the plane of travel of the 70
blades, a plurality of guide members slidably
mounted upon the shaft, the outermost guide
member being rigidly united to the shaft and
the innermost guide member being ?xedly united
to the frame, resilient means slidably mounted 75
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