US1925481A - Bread slicing machine - Google Patents

Description

P 1933. H. J. CRINER BREAD SLICING MACHINE 2 Sheets-Sheet 1 Filed Jan. 5, 1935 INVENTOR.

ATTORNEYS Sept. 5, 1933. H. J. CRINER 1,925,431

BREAD SLICING MACHINE- f Filed Jan. 5, 1953 2 Sheets-Sheet 2 L F. 2 INVENTOR.

ATTORNEYS Patented Sept. 5, 1933 PATENT o FIcE 1,925,481 BREAD SLICING MACHINE Harry J. Criner, 'Davenport, Iowa, assignor of one-half to A. G. Bush, Davenport, Iowa Application January 5, 1933. Serial N0.'650,260

17 Claims.

My invention relates to improvements in bread slicing machines of the general type shown in my co-pending application Serial No. 636,459, in

which blades having a reciprocating stroke actuated at least in one direction by'a rocker arm,

are utilized.

The objects of my invention are: 7

1. To provide a slicing machine in which two series of blades reciprocate alternately and have,

19 their cutting edges maintained substantially in the same plane; Y

2. To provide a slicing machine in which the cutting blades may be reciprocated by a rocker arm and the cutting edges maintained in sub- 5 stantially the same plane;

3. To provide means which will permit a relatively long stroke of cutting blades'actuated by a rocker armwithout materially deflecting the cutting edges of the blade from a given plane of operation; 1

4. To provide means for driving a reciprocatingblade or other part bya-rocker arm and for maintainingit constantly in a given line of travel longitudinally while being so-driven;

5. To provide a, simple, practical form of reciprocating slicing machine which will reduce vibration to a minimum; h

6. To provide a balanced straight line drive for alternatingly reciprocating sets of longitudinally moving parts.

I accomplish these objectsby the means illustrated in the accompanying drawings, in which,--

Figure 1 is a side elevation of my machine on the line 1-1 of Figure 2;

Figure 2 is a vertical section of my machine on the line 22 of Figure 1; a

Figure 3 is an enlarged detail plan view showing a portion-of thecrossbars and rocker arms in section;

line 4-4 of Figure 3.

Similar numerals refer to throughout the several views.

My machine comprisesa frame, 1, having feet, la, comprising side framessuitably united by cross-memberswhioh may be either separate or formed integral therewith.

Upon the frame near one end thereof I mount a housing, 21, preferably formed of a deep metal channel suitably secured to thegframe by bolts, rivets or other means and with end plates, 22 and 22a, on either side thereof suitably secured by bolts or'rivets, 22b, to the housing, 21.

v I mount a pair of short shafts, 40, -i n suitable bearings, 40a, formed on opposite sides of the similar parts Figure 4 is a normal size sectional detail on the main frame. Upon each shaft, 40, Imount just inside of the frame, a rocker arm, 38'. These rocker arms are pivotally mounted upon the shafts, 40, and have vcrossbars, 38a, formed integral therewith-or suitably secured thereto. I-- prefer to cast the rocker arms 38, and the cross bars, 38a, in one piece. Each rocker arm, 38, has a hub, 39, formed integral therewith at the middle thereof and hubs, 41, cast integral therewith at the opposite ends thereof. The hubs, 39, are preferably provided with ball-bearings mounted upon the shafts, 40,-so as to rotate freely thereon.

In each of the hubs 'or bosses, 41, I mount an oilless bearing, 42. 'Drive bars .for the cutting blades are formed of cross-members, 44, each; cross-member having a bracket, 43, cast integral therewith at each end thereof and in the, brackets, 43, pins, 42a, are rigidly secured whichextend into and are pivotally mounted in thebearings, 42. 48, formed upon the inner face thereof, with a slot for opening, 48a, cut in each lug to permit the introduction of a cutting blade therein.

The cutting blades may be secured to the lugs by pivot. pins, 25a, secured inthe lower ends of the blades and seated in suitable bores or grooves in the lugs, 48. The lower end of each bracket, 43, has a hardened steel plate, 45, secured upon the inner face thereof by set screws, 44a. In

each side frame of the machine adjacentthe lower ends of the brackets, 43, I mount a pivot pin or stub shaft, 47, carrying a, ball-bearing, 46. These ball-bearings, 46, and the inner faces of the lower ends of the brackets, 43, are so proportioned and located that the hardened plates, 45, will form a contact with the adjacent faces of the roller bearings and as the rocker arm, 38, os-

cillates, the steel plates, 45, will run up and down upon the adjacent ball-bearings, 46, thereby largely doing away with any friction;

I attach the lower ends of a plurality of cutting blades, 25, to the lugs, 48, as heretofore described, these blades being arranged in two series,

one series being'attached to the lugs upon the front drive bar, 44, and the other series being attached to the lugsupon the rear drive bar, 44.

\- These cutting blades extend upwardly through a plate or feed table, 16, having slots or openings, 28, cut therein through which the blades may pass, and the upper ends of the blades, 25, are attached to the lower ends of springs, 23, the upper ends of which project upwardly throughthe housing 21,,and are threaded to receive and be secured in placeby nuts, 24, by which the ten-r Each drive; bar, 44, has a plurality of lugs, 7

sion upon the cutting blades may be individually adjusted.

I mount oilless guide or bearing blocks, 26, within the housing, 21, said guide-bars being provided with slots through which the blades severally pass, the sides of the slots acting as guides for the blades.

I prefer to form this guide-bar, 26, of some graphited bearing metal, but it is obvious that oiled maple or any other suitable material may be used. The guidebars, 26, are mounted in angleiron, 27, the ends of which may be secured to the sides of the housing, 21, by rivetsor bolts.

In order to oscillate the rocker arms, 38, I'form integral with one of the crossbars, 38a, an arm,

curedin the fork, and pivotally mounted in'the bearing, 36. The opposite end, 33,-of the connecting rod is pivotally mounted upon a crank 'pin, 34," with an oilless bearing, 34a, interposed between them. This crank pin is rigidly united "to a flywheel, 29, which revolves upon a shaft,

'pulley,'3, mounted upon the shaft of the motor, 2.

The motor,2, has its feet, 2a, mounted upon the frame, 1, preferably with a-pad, 1b, interposed to reduce vibration.

Supports, 5, united by a crossbar, 5a, extend upwardly from the frame at the left or front of the machine and have mounted in the upper end thereof a' conveyor shaft, 8,'upon which a roll, 7, is secured which carries, a conveyor belt, 6.

A similar roll, "7a, is mounted upon asimilar shaft, 8a, secured in the frame adjacent the bread plate, 16, and the conveyor'belt, 6, passes over both rolls and carries the bread toward the blades. I

Lateral guides, 9, are secured to the uprights, 5, by bolts, 9a, and serve to keep the bread from lateral displacement in its passage to the'blades. A similar conveyor belt, 10, is mounted at the rear of themachine to carry the bread away after it is cut and passes over a rollgll, mounted upon An extension, 13, may be formed integral with the bracket, 15, to carry the lower'conveyor roll of the take-off conveyor, but

is not shown in the drawings as any desired type of conveyor may be used with this slicing machine.

Guiderails, 1 2, are secured to the frame by bolts, 12a, adjacent the conveyor belt, 10.

, While I have shown each individual blade attached to and actuated in one direction by a tension spring and in the other direction bythe drive bars, I do not limit my claims to this precise construction. It is obvious that any form of attachment for the upper ends of the blades may be used which will carry themin a straight line'longitudinally and that the-upper ends of the blades may be driven by duplicates of the driving ap paratus for the lower ends if desired without departingfrom the spirit of my invention.

In practice 'it is found desirable to actuate the cutting blade longitudinally in such a way as to keep all cutting edges in a given vertical plane travel in the same vertical planes.

lines and with the pivots in the lower ends of the blades all secured in line transversely of the machine, they will cause all of the blades to Th springs attached to the upper ends of the blades have a direct vertical pull and will tend to hold the blades in line vertically at all times. If desired, the blades of one series may be given a lead over the other series by advancing one of the drive and arranging the spring of the first series to correspond.

The pull of the springs upon the blades will hold the lower ends of the brackets 43, as far inward as the ball-bearings, 46, and the hardened plates, 45, will permit. The outer casing of the ball-bearing will act as detent to prevent the hardened plates, 45, and the brackets attached thereto, from being carried out of line inwardly.

In the operation of my machine, the parts are assembled as described above, and the motor started. The bread to be sliced is placed upon the conveyor, 6, which is drivenby a pulley, 49, that may be belted to the motor,2, or to any independent source of power. wheel,'29, causes the rocker arms, 38, to oscillate upon their shafts, 40. As one end of the rockerarm, 38, travels downwardly, it carries its attached bracket, 43, downwardly, thus driving the attached lugs, 48, and the blades, 25, secured there- 1 to, in a downward direction. As the fly wheel, 29, completes its revolution, it drives the connecting rod, 22, upwardly and reverses the action of the rocker arm, 38, carrying the opposite series of lugs and attached blades downwardly, and this reciprocating action is repeated as long asth motor runs. 1

The blades are'propelled' upwardly by the upward motion of the lugs to which they are at-. tached and, at the same time, are drawn upwardly by the tension of the springs attached thereto so asto give them a reciprocating action through the bread and each blade makes its appropriate slicing cut, the blades, of course, being spaced at the desired distance apart. springs is sufficient to keep'the blades taut-at all times and to permit the use of very thin blades.

I prefer to form the blades with a toothed cutting edge, but the cutting edge may be straight or.

sinuate if desired.

It is obvious that various changes may be made in the size, proportions and position of the various parts of my apparatus and that it may be adaptedto out various things, without departing from the spirit of my invention andI do not confinemy claims to the precise forms shown in the drawings.

"I- claim:

The revolution of the fly The tension (if the 1. In a slicing machinehaving a frame and-a plurality of slicing blades mounted therein, an actuating mechanism 'forthe blades comprising a pair-o'fspaced rocker-arms pivoted in the frame, an opposed pair of brackets pivotally mounted upon each of the-rocker-arms,- drive bars'u'niting;

the corresponding -bracketslaterally, a-plurality of lugs united 'to' thedrive bars, means for severally attaching one end of the blades to the lugs,

- and means for oscillating the rocker-arms.

2. In a slicing machine having a frame and a plurality of slicing blades mounted. therein, an-

actuating mechanism for the blades-comprising a pair of spaced rocker-arms united bycrossbars and pivoted in the frame, an opposed pair of brackets pivotally mounted upon each of the rocker-arms, drive bars uniting the corresponding brackets laterally, a plurality of lugs united to the drive ba'rs,means for severally attaching oneend of the blades to the'lugs, and means for oscillating the rocker-arms 3. In a slicing machine having a frame and a plurality of slicing blades mounted'there'in, an actuating mechanism for the blades comprising a pair of spaced rocker-arms pivoted in the frame, '1 an opposed pair of brackets pivotally mounted upon each of the rocker-arms, drive bars uniting the corresponding brackets laterally, a plurality bearing blocks, and means for rocker-arms.

4. In a slicing machine having a frame and a plurality of slicing blades mounted therein, actuating mechanism for theblades comprising scillating the 7 pair of spaced rocker-arms united by cross-bars and pivoted in the frame, an opposed pair of brackets pivotally mounted upon each of the rocker-arms, drive bars uniting the corresponding brackets laterally, a plurality of lugs united to the drive bars severally, means attaching one end of the blades to the lugs, bearing blocks united respectively to the free ends of thebrackets, rolls pivotally mounted in the frame and interposed respectively between the opposed bearing blocks, and means for oscillating the rocker- 5. In a slicing machine havinga frame a'nda plurality of slicing blades mounted therein, an

1' actuating mechanism for the blades comprising a pair of' spaced rocker-arms pivoted in the frame, an-opposed pair of brackets pivotally mounted upon each of the r0ckerarms, drive bars uniting the corresponding brackets laterally, a series of lugs united to each of the drive bars severally, means pivotally attaching one end of the blades to the lugs, bearing blocks united respectively to the free ends of the brackets, detents mounted in the frame and interposed respectively between the opposed bearing blocks, and means for oscillating the rocker-arms.

6. In a slicing machine having a frame and a plurality of slicing blades mounted therein, an actuating mechanism for the blades comprising a pair of spaced rocker-arms pivoted in the frame, an opposed pair of brackets pivotally mounted upon each of the rocker-arms, drive bars uniting the corresponding brackets laterally, a series of lugs united to each of the drive bars severally, means pivotally attaching one end of the blades to the lugs, tension springs attaching the other end of the blades severally to the frame and adapted to exert a continuous tension upon the blades, bear ng blocks united respectively to the free ends of the brackets, detents mounted in the frame and interposed respectively between the opposed bearing blocks, and means for oscillating the rocker-arms.

'7. In a slicing machine having a frame and ,1 10'. A slicing spaced rocker-arms pivoted in the frame on opaplur'alityof slicing blades mounted therein, an actuating mechanism for the'blades comprising a pair of spaced rocker-arms pivoted in theframe. an opposed pair of brackets pivotally mounted upon each of therocker-arms, drive bars uniting the corresponding brackets laterally, a series of lugs united to each of the drive bar's severally, means pivotally'attaching one end of the blades'to the lugs, bearing inner faces formed upon the free ends of the brackets, detents mounted in the frame andinterposed respectively between the opposed bearing faces, and means for oscillating the rocker-arms. Y

' 8;--A slicing machine comprising a frame,

spaced "rocker-arms pivoted in the frame on opposite sides thereof respectively, cross-bars united to the rocker-arms, a bracket pivotally mounted upon each of the rocker-arms in corresponding positions near corresponding ends thereof, a transverse drive bar united to the brackets, a plurality of lugs united to the drive bar, means for severally attaching one end of the blades to the lugs, bearing faces formed respectively upon the free ends .of the brackets; rolls pivotally mounted in the frame adjacent'the bearing faces of the brackets, and means for oscillating the rocker-arms.

9.A 's1icing machine comprising a frame,

spaced rocker-arms pivoted in the frame on opposite sides-thereof respectively, cross-bars united to the rocker-arms, a pair of opposed brackets pivotally mounted upon each of the rocker-arms in corresponding positions at or near the ends thereof, transverse drive bars united to the corresponding brackets of each pair respectively, a

plurality of lugs united to the drive bars, means for severally attaching one end of the blades to the lugs, bearingfaces united respectively to the free ends of the brackets, rolls pivotally mounted in the'frame adjacent the bearing faces of the brackets,: and means for oscillating the rockerarms.

machine comprising a frame,

posite sides-thereof respectively, cross-bars united "to the rocker-arms, apairof opposed brackets pivotally mounted upon each of the rocker-arms in corresponding positions at ornear theends thereof, transverse drive bars united to the cor- A responding brackets of each pair respectively, a plurality of lugs united to the drive bars, means for severally attaching one end of the blades to the lugs, bearing faces united respectively to the free ends of the brackets, detents mounted in the frame adjacent the bearing faces of the brackets,

and means for oscillating the rocker-arms.

11. A slicing machine comprising a frame, spaced rocker-armspivoted in the frame on opposite sides thereof respectively, cross-bars united to the rocker-arms, a pair of opposed brackets pivotally mounted upon each of the rocker-arms in corresponding positions at or near the ends thereof, transverse drive bars united to the cor- ISO responding brackets of each pair respectively, a

plurality of lugs united to the drive bars, means for severally attaching one end of the blades to the lugs, tension springs attaching the other end of the blades severally to the frame and adapted to exert a continuous tension upon the blades,

posite sidesthereof respectively,cross-bars united to the rocker-arms, asbracket pivotallyimounted upon I each of the zrocker-arms in corresponding positions near corresponding ends thereof, a transverse drive bar united to the brackets, a plurality of lugs unitedto the vdrive'banmeans 'for severally attaching oneend of the blades to the lugs, bearing facesformed-respectively upon the .free ends of the brackets, rolls pivotally mountedin the frame adjacent the bearingfaces of the-brackets, means for oscillatingthe rocker- 4 arms, and means forsupportingthe article be- :cle to be sliced during the-slicing operation.

14. A slicing machine comprising a :frame, spaced rocker-armspivoted in the'frame on op- 'posite sides-thereof respectively, cross-bars united to the rocker-arms, a pair of opposed brackets pivotally mounted upon each of the rocker-arms in corresponding positions at .or near the ends thereof, transverse drive barscunited to the correspondingibrackets of each-pair respectively, a pluralityof lugsunited to the-drive bars, means for severally attachingone .end of Lthe'bla'desato the lugs, bearing faces'united respectively to the free ends of the brackets,.rolls pivotally. mounted in the frame adjacentthe bearing faces'of-the brackets, means for oscillating the rocker-arms, and means-for supporting and feeding the article to be sliced'during the'slicing operation.

15. A slicing -machine comprising a frame,

spaced rocker-arms pivoted in the frame on opposite sides thereof respectively, cross-bars united to the :rocker-arms, a pair of opposed brackets pivotally -mounted upon :each of the rocker-arms'in correspondingrpositions at or near the ends .thereof, transverse drive =bars united to the corresponding brackets of each pair respectively,aplurality of lugs united tothe drive bars,,

means for severally attaching one end .of the blades to thelugs, bearing faces united respec- .tively to the free ends of the brackets, detents mountedin the frame adjacent the bearing faces of thebrackets'means for oscillating the rocker--v arms, and meansfor supporting and feeding the article to be sliced during the slicing operation.

16..A slicing machine comprising a frame, spaced rocker-arms pivoted in the frame on 0pposite sides thereof respectively, cross-bars unitedto therocker-arms, a'pair of opposed brackets pivotallymounted upon each of the rocker-arms incorresponding positions at or near the ends thereof, transverse-drive bars united to the corresponding brackets of each'pair respectively, a

plurality oflugs-unitedto the drive bars, means for-severally attaching one end of the-bladesto theilugs, bearingfacesunited respectivelyto: the free ends of the brackets, rolls pivotally mounted inthe frame adjacent the bearing faces of the brackets, a.-slotted tableinterposed between the drivebars'and the springs with the blades passing through the slots therein, and means :for oscillatingthe rocker-arms.

17. A slicing machine comprising a frame, spaced rocker-arms pivoted in the frame on opposite sides thereof respectively, cross-bars united to the rocker-arms, a pair of opposedbrackets pivotally mounted upon each of the rocker-arms in corresponding positions at or near the ends thereof, transverse drive bars unitedto the corresponding brackets of each pair respectively, a

plurality of lugs united to the drive bars, means for severallyattaching one-end of the blades to the lugsybearingfaces united respectivelyto the free ends of the brackets, rolls pivotally mounted in the .frame adjacent the bearing faces of the brackets, a slotted table interposed between the drive bars andthe-springs with the blades passing through'the slots therein,=conveyors'to carry the bread to .and from the slotted table, and means for oscillating the rocker arms.

HARRY vJ. .CRINER.

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