US1809430A - Slicing machine - Google Patents

Description

June 9, 1931. y Y A. VAN DUYN 1,809,430

SLICING MACHINE Filed Jan. 20, 1927 4 W @7 L x I 5 3 M flaw } ADRIANUS VAN DUYN, or

l6 j usting crank at a slow speed and is a view Patented June 9, 1931 UNITED srarss reta n BUTTER-DAM, NETHERLANDS, ASSIGNOR TO U. S.

SLIGING MACHINE COMIPANY, OF LA FORTE, INDIANA, A CORPORATION OF INDIANA SLICING MACHINE Application filed January 20, 1327, Serial H'o. 162,229, and in Germany May 20, 1826.

This invention relates to slicing machines of the kind having a reciprocating part for effecting the slicing operation and has for its object the provision of means for adthe range and speed of reciprocation. Other objects will appear from the following description.

The invention is exemplified in the combination and arrangement of parts shown in the accompanying drawings and clescribed in the following specification, and it is more particularly pointed out in the appended claims.

In the drawings Fig. 1 is an elevation of .a slicing machine with parts in section, showing one embodiment of the present invention;

Fig. 2 is a top plan view of the mechanism shown in Fig. 1.

Fig. 3 is a sectional view of the change speed gearing shown in Fig. l; and

Fig. i is a diagrammatic view of the arrangement of the gears used to drive the looking from the left of Fig. 3.

In the operation of slicing machines as heretofore manufactured, in which the reciprocating table has a fixed range of movement, the movement must be great enough to accommodate the maximum sized piece of material to be sliced by the machine and when a smaller piece is being sliced, a considerable portion of the reciprocating move ment is wasted. In the present invention,

the range of reciprocation may be adjusted so that idle movement of the reciprocating parts is avoided. Means is also provided for speeding up the drive for the reciprocating part when the range of reciprocation is decreased so that the actual rate of travel of the reciprocating part is not diminished when the range of movement is diminished.

The accompanying drawings show one embodiment of the present invention in which thenumeral 10 designates the base of a slicing machine having a reciprocating ta ble 11 mounted to slide onways 12. A hollow drive shaft, comprisingsections 13 and '13, is journaled in bearings within thebase 10 and is connected to ahand wheel 14 by means of which the drive shaft is rotated. A beveled pinion 15 is connected to thedrive shaft 13 and meshes with acrown gear 16 carried by a hollow stud shaft 17 journaled in abearing 18 in theframe 10. V Acrank arm 19 is secured to the upper end of the shaft 17 and is rotated by thegear 16 when thehand wheel 14 is turned. Across-head 20 is slidably mounted in aslot 21 in the'crankarm 19 and a connectinglink 22 is pivotall connected to thecross-head 20 by acrank pin 23. The other end of thelink 22 is pivoted at 24- to the reciprocating table 11. Rotation ofthearm 19 therefore recipro cates the table 11 upon itsguides 12. Ascrew shaft 25 is journaled in thecrank arm 19 and is disposed longitudinally of theslot 21. Thescrew shaft 25 has threaded engagement with thecross-head 20 so that rotation of the screw shaft will slide the cross head in itsguide slot 21. Apinion 26 is secured to thescrew shaft 25 and meshes with apinion 27 carried by ashaft 28 which is journaled in and disposed concentrically with the hollow shaft 17 The lower end of theshaft 28 carries a gear 29 which meshes with a pinion 30. The pinion 30 is carried on'a shaft 31 which extends centrally through thehollow shafts 13 and 13 and carries ahand wheel 32 at its outer end. It will be apparent that rotation ofthehand wheel 32 will rotate thescrew shaft 19 and adjust thecross-head 20, thus changing the effective length of thecrank arm 19 and adjusting the range of reciprocation of the table 11.

WVhen a comparatively large piece of meat, such as a piece of bacon, is to be sliced, the cross-head will be disposed at the outer end of theslot 21, as illustrated inthe drawings, and the table 11 will have its maximum range of movement. If a smaller piece of meat, such as a piece of sausage, is to be sliced, thehand crank 32 may be rotated to move the cross-head 2O inwardly and thus shorten the stroke of the reciprocating table. When the range of movement of the table is less, the complete stroke may be made in less time without increasing the cutting speed. For this reason, it is therep at the same speed as shaft 1.3.

fore desirable to speed up the rotation of the crank shaft when the length of travel of the reciprocating table is decreased. For this purpose, the two sections of the hollow drive shaft are connected by a variable speed device of any suitable construction, indicated generally'at 33. Speed changing devices suitable for this purpose are commonly employed in the rear hubs of bicycles and are well-known in the art.

The speed changing device, indicated generally as 33 in Fig. 1, is more specifically illustrated in Figs. 3 and 4. In these figures, the change speed mechanism is shown comprisingmember 34 rigidly fastened to theshaft 13 by means ofscrew 36, and amember 35 fastened by means ofbolts 36 to thebase 10. Rigidly fastened to themember 35 are thestuds 37, 37, 38 and 38, upon which are rotatably mounted the gears A,

A, B and B, respectively. Themember 34 has twointernal gears 44 and 39. Agear 40 is slidably mounted upon thehollow shaft 13 but is fixed so as to rotate therewith by means of thepin 41 fastened to thegear 40 and extending through a slot 42 in theshaft 13. Thepin 41 extends also into the helical groove 43 in the shaft 31. The gears B and B are in constant mesh with theinternal gear 39 onmember 34 and thegear 40 is adapted to slide on the shaft 13' to alternately engage thegear 40 with the gears A and A and gear 44 in a manner presently to be described.

The operation of the change speed mechanism is as follows 1-1Viththe parts shown in the position indicated in Figs. 3 and 4, the gear 4O is in mesh with the gears A and A. Therefore, rotation of theshaft 13 by means of theflywheel 14, causes themember 34 to rotate in the same direction as thegear 40 through the intermediary of the gears A, A, B, B, and 39. This rotation is at a speed which is less than the speed of rotation of theshaft 13. Consequently, theshaft 13 is rotated at a speed less than that of theshaft 13 since it is rigidly fastened to themember 34. This causes a slower reciprocation of the carriage 1.1 for the same speed of rotation of theshaft 13.

Rotation of the shaft 31 in a counterclockwise direction, as seen in Fig. 3, causes thegear 40 to slide along the'shaft 13 into engagement with the internal gear 44 due to' the engagement of thepin 41 with the gpiral groove 43. This operation causes a irect connection between theshaft 13 and theshaft 13 so that theshaft 13 is driven This speeds up the rotation of thecrank 19 and if the length of the path of travel of the carriage 11 were the same, the movement of the car riage past the knife would be faster than where theshaft 13 was not directly connected to theshaft 13. Since it is always clesirable to have the speed of movement of the carriage past the knife remain substantially the same, it is necessary to shorten the effective length of thecrank 19 and this is done, as previously described, by moving theblock 20 to the position nearest the center of the crank. This is automatically done as thegear 40 is shifted into engagement with the gear 44 because it is necessary at that time to rotate the shaft 31 and this, in turn, rotates the gear 30 and slides theblock 20 to the position nearest the center of the crank, as previously described. Therefore, although the crank is rotating morerapidly than previously, the effective length of the crank arm is shorter and the carriage does not move through as great a distance and consequently the speed with which it moves past the knife is substantially the same as where theshaft 13 is driven through thegears 40, A, A, B, B, and 39.

Obviously, those skilled in the art may make various changes in the details and arrangement of parts Without departing from the spirit and scope of the invention as defined by the claims hereto appended, and I therefore do not wish to be restricted to the precise construction herein disclosed.

I claim '1. A. slicing machine comprising a reciprocating table, a rotary crank arm a hollow driving shaft for said crank arm, a crosshead slidably mounted in said crank arm, a link connecting said cross-head with said table, a rotary shaft concentric with said hollow shaft and having threaded connection with said cross-head for moving said crosshead along said crank arm, a hand wheel arranged at an easily accessible position on said slicing machine, and operative connection between said hand wheel and rotary shaft for rotating said shaft.

2. A slicing machine comprising a reciprocating table, a crank arm, a cross-head slidably mounted in said crank arm, link connecting said cross-head and table, a screw shaft having threaded connection with said cross-head, a stud shaft co-axial with the axis of rotation of said crank arm, gearing connecting said stud shaft and screw shaft, a gear on said stud shaft, an operating shaft extending radially of said gear and having a pinion thereon meshing with said gear, and a hand device for rotating said operating shaft to adjust said cross-head along said crank arm.

3. A slicing machine comprising a reciprocating table, a crank arm, a link having one end pivotally connected with said table, a crank pin adjustable along said crank arm and having the other end of said link pivoted thereon, a hollow drive shaft for rotating said crank arm, means for adjusting said crank pin along said crank arm, and an 0perating shaft for said adjusting means extending through said hollow drive shaft.

4. A slicing machine having a slicing knife and a work support arranged to reciprocate relative to each other for severing slices, means for adjusting the range of relative reciprocation of said knife and support, and means for changing the speed of relative reciprocation of said knife and support.

A slicing machine comprising a recip rocating member, a drive for said member, an adjustable connection between said drive and member for varying the range of reciprocation of said member, and a speed-changing connection between said drive and member for varying the relative speed of said drive and member.

6. A slicing machine comprising a slicing knife, a reciprocating table, a drive for said slicing machine, a rotary member operated by said drive for reciprocating said table, adjustable connection between said rotary member and reciprocating table for varying the range of movement of said table, and a speed-changing connection between said. drive and rotary member.

7. A slicing machine comprising siicing knife, a reciprocating table, a crank arm, a link having adjustable connection. with said crank arm for reciprocating said table, a hollow drive shaft for rotating said crank arm, an operating shaft extending through said drive shaft, a connection between said operating shaft and crank a rm for aijljusting said link along said crank arm, drive wheel for rotating said drive shaft, and speedijzhanging mechanism interposed between said drive wheel and drive shaft.

8. A slicing machine comprising a rotary slicing knife, a reciprocating table for presenting material to said knife to be sliced, a rotary crank arm having a cross-head adjustable longitudinally thereof, a link connecting said. cross-head and table, a screw sl'iaft for moving said cross-head along said crank arm, a hollow drive shaft for rotating said crank arm, an operating shaft extending through said hollow drive shaft, means connecting said operating shaft with said screw shaft to rotate said screw shaft from said operating shaft, a drive wheel, and variable speed connection between said drive wheel an d drive shaft.

9v In a slicing machine, the combination with a slicing knife, of a work support, means for moving said slicing knife and work support relative to each other for severing slices froma substance mounted on said work support, and means for adjusting the range of relative reciprocation of said knife and support and simultaneously changing the speed of relative reciprocation of said knife and support. a

10. In a slicing machine, the combination with a reciprocating member, of a drive for said member, an adjustable connection between said drive and member for varying the range of reciprocation of said member, and a speed changing connection between said drive and member for varying the speed of said drive simultaneously with the varying of the range of reciprocation of said member.

11. In a slicing machine, the combination with a'slicing knife, of a reciprocating table, a drive for said slicing machine, a rotary member operated by said drive for reciprocating said table, an adjustable connection between said rotary member and reciprocating table for varying the range'of movement of said table, ,a speed changing connection between said drive and rotary member, and

means for simultaneously changing the range of movement of said table with the changing of the speed by said speed chang' ing connection.

12. In a slicing machine, the combination with a slicing knife, of a reciprocating table, a drive for said slicing machine, a pivoted member operated by said drive for reciproeating said table, an adjustable connection between said pivoted member and said reciprocating table for varying the range of movement of said table, and a speed chang ing connection between said drive andpivoted member operable to change the speed of reciprocation of said table simultaneously withthe changing of saidadjustable connection to vary the range of movement of said table. I

13. A slicing machine comprising a retary knife and a table movable relative to said knife so that slices may be cut from a substance on said table, means for causing relative reciprocation between said. knifeand table, adjustable to vary the extent of relas tive travel between said knife and table com-- prising pivotally connecting members which are also pivotally connected respectively to elements fixed with respect to said knife and said table, said members being movable about their common pivotal connection to cause relative reciprocation between said knife and table, means for varying the point of pivotal connection between said members to vary the extent of relative reciprocation between said knife and table, and means for varying the rate of relative movement be tween said knife and table.

14. A slicing machine comprisin a rotary knife and a table movable relative to said knife so that slices may be cut from a substance on said table, and means for causing relative reciprocation between said knife and table, adjustable to vary the'extent of the relative travel between said knife and table comprising pivotally connected members which are also pivoted respectively to ele ments fixed with respect to said knife and said table, said members belng movable about their common pivotal connection to cause relative reciprocation between said knife and table, means for varying the point of pivotal connection between said members to vary the extent of relative reciprocation knife and a table movable relative to said knife so that slices may be cut from a substance on said table, and means for causing relative reciprocation between said knife and table, adjustable to vary the extent of the relative travel between said knife and table and to vary the rate of relative movement between said knife and table comprising pivotally connected members which are also pivoted respectively to elements fixed with respect to said knife and said table, said members being movable about their pivotal connection to cause relative reciprocation between said knife and table, means for varying the point of pivotal connection be tween said members to vary the extent of relative reciprocation between said knife and table, and means for simultaneously varying the speed of relative reciprocation of said knife and table to increase the number of relative reciprocations per unit of time simultaneously with a decrease in the extent of the relative reciprocation.

16. In a slicing machine, the combination with a reciprocating member, of a pivoted,

arm movable about its pivot for actuating said member, means for moving said pivoted arm, a link having an adjustable connection between said arm and said member, change speed. mechanism for moving said arm to reciprocate said member through said link,

means for varying the adjustable link cornection between said arm and member to vary the extent of reciprocation of said member, and means for changing said change speed mechanism to vary the rate of reciprocation of said member.

17. In a slicing machine, the combination with a reciprocating member, of a pivoted arm movable about its pivot for actuating said member, means for moving said-pivoted arm, a link having an adjustable connection between said arm and said member, change speed mechanism for moving said arm to reciprocate said member through said link,

, means for varying the adjustabie link connection between said arm and member to vary the extent of reciprocation of said member, and means for changing said change speed mechanism to vary the rate of V reciprocation of said member simultaneous-- ly with the change in the adjustable connection between. said arm and member.

18. In a slicing machine, the combination with a slicing knife, of a work support, means for moving said slicing knife and aoa4ao

Images