US2012353A - Feeding device for food cutting machines - Google Patents

Description

Aug. 2?, 3935. SCHAUMBURG 2,@3l2,353

FEEDING DEVICE FOR FOOD CUTTING MACHINES Filed Dec. 11, 1933 w a) V Patented Aug. 27, 1935 um'rsn STATES:

ENT OFFICE FEEDING DEVICE FOR FOOD CUTTING MACHINES Hermann Schaumburg, Cassel; Germany M Application December 11, 1933, Serial No. 701,927

In Germany May 26', 1933 1 Claim. (aims-11s) Food cutting machines are known in which a portion of the gearing actuating the feeding de- The invention provides a feeding device for the articles offo'od to be cut, in which the operationof the automatic reverse and disengagement of the driving mechanism for the feeding piston 15 is effected within the gearing arranged above the feeding cylinder directly by means of the feeding piston or feeding spindle, all the mechanical parts hampering and endangering the service of the feeding cylinder being eliminated.

20 The shifting of the gear coupling for the re turn movement of the feeding piston is effected by an arm on the upper end of the feeding spindle, which arm, through the intermediary of -arod, 'actuates an abutment-member, thereby releasing a mechanism locking the coupling. The

spring loaded coupling spindle springs back when the abutment member is actuated, causing the claws of the coupling to engage in the return motion wheel of the gearing and the accelerated return movement of the piston. The reverse movement'of the machine and consequently the stopping of the feeding piston on reaching its extreme raised position are effected by. the feeding piston contacting witha pin which is connected with a double-armed lever effecting the disengagement of the coupling;

The invention is illustrated diagrammatically and by way of example on the accompanying drawing on which Figure 1 is a side-view of a 40 vertical food cutting machine equipped with my improved conveying device, and Figure 2 is a vertical longitudinal section through the driving mechanism of the feeding device, this section being drawn to an enlarged scale.

45 On the drawing, I (Fig. 1) denotes a feeding cylinder receiving the article of food to be cut into pieces, and 2 (Figs. 1 and 2) is a piston which is secured to the lower end of a threaded spindle i by means of which the piston can be introduced 9 into said cylinder and exert therein a pressure upon the article of food having prior thereto been placed into said cylinder. That pressure is the feeding pressure by which the piece of food to be cut is pressed against the cutting tool.

55 The cutting device proper which does not form a part of this invention and is, therefore, not shown is housed in the casing I (Fig. 1), on the top'of which the feeding device is arranged. From said casing projects forth laterally an end of the shaft of the cuttingd'evice. Said project-- 5 ing shaft end is provided with a fastand a loose belt pulley 6 and with a cord pulley 38 connectedby a rope 5 with a rope pulley 38 affixed to a horizontal shaft 8-extending into the casing 3 of the'feeding device. l-

On the shaft 8 aretwo shiftable pairs of cogwheels, viz the pair 9, l0 and the pair ll, l2. Parallel to said shaft isarran'geda counter-shaft 34 bearing a sleeve 8* to which are firmly affixed four cog-wheels I3, i4, i-and It. The cogwheel pair 9, I0 is connected with a grooved couplingroll I! andthe cog-wheel pair I I, I2 is pro-' vided with a grooved coupling roll lfi i The roll H is engaged by a shiftable coupling fork l1 and the roll- [8* is engaged by a shiftable coupling fork IB. The two forks'are attached to rods l9 and 20 respectively, which extend through the casing 3 and project; forth from it counter to the pulley 38 and are provided at their free ends with grips l9 and 20 so'that they can be shifted in order to couple either the wheel 9 with the wheel [3' or the wheel Ill with the wheel l4 (in both cases by -meansofthe'members 20 20,. I! and H or the wheel II with the wheel l5 or the wheel i2 with the wheel [6 (in both cases by means of the members 19*, I9, I 8 and w The counter shaft 8* can, thus, be rotated with four different speeds. i l I On the shaft 8' is also a cog-wheel 2| and on the shaft is a cog-wheel 23 and between these wheels is 'acbg-wheet 22. It will be obvious that when rotary motion is transmitted from the shaft 8 to the shaft 34 by the intermediary of said wheels 2|, 22 and 23 the shaft 34 will be turned counter to the direction of rotation im- 40 parted to it by the wheels 9-16. The wheel 2| is larger than the wheel 23 so that the rotary speed of the shaft 34 will be higher than that of the shaft 8.

The shaft 34 and the sleeve 8* can be coupled with one another by a coupling member 26 connected with said shaft by feather and groove, and

' the cog-wheel 23 can be connected with the shaft 34 by another coupling member 26, each coupling member being engaged by coupling pins projecting forth towards one another from said wheels I6 and 23. The two coupling members 26 which completely resemble one another are in engagement with an arm 25 located between them and being affixed to the inner end of a horizontal rod the device is at a standstill (except the driving shaft 8) On the top of the spindle 4 is an arm 21 which contacts with the upper end of a vertical rod 28 when it arrives in its lowermost position, as shown in Fig. 2, in which the main portion of the spindle is broken out. The other spindle portion below the gap is, however, in its uppermost position, as is, consequently, also the piston 2.

The rod 28 is guided in the top plate of the'casing 3, as well as in an abutment member 39 through which it projectsa little with its lower end 3'l, this end forming an abutment for a projection 3% provided on an oscillable arm 29 subjected to the upwardly directed pressure of a helical compressive spring 29*. The rod 3| is surrounded withahelical compressive spring 3W located between said abutment member 39 and an intermediate wall 3 of the casing 3. By shifting the rod 3! to the left (Fig. 2), the arm 25 will couple the shaft 34 with the sleeve 8 and this sleeve will 'be rotated with that speed determined by the cog-wheels chosen. The rotary motion is transmitted to the threaded spindle 4 by means of bevel- wheels 34 and 34 of which the latteris internallythreaded so as to move the spindle 4 downwardly whereby the piston 2 will be moved into the cylinder l shoving the article of food therein contained down to' the cutting device located in the casing I.. When the arm Zl'of the spindle'4 touches the rod 28, the lower end 31 of the same moves the arm 29 downwardly counter to the pressure of the spring 29 whereby the projection 36 will be moved away from said end 3'! so that the abutment-will be released and the spring 3| will suddenly move the rod 3| to the right, the arm 25 effecting now coupling between the coupling member 26 with the cog-wheel 23, in consequence whereof the wheels 34 and 34 willbe turned counter to the former direction. The spindle 4 and the piston 2 will, therefore, be lifted.

When the piston arrives in its uppermost position, it lifts a pin 35 (Fig. 2) that turns a doublearmed lever 32 supported on a pivotj33. The upper arm of this lever acts upon the-arm 25 and this arm shifts the couplings 26 to the left so that the rotary motion of the shaft 34 is no longer transmitted to the bevel- wheels 34 and 34 The device comes now to a standstill and another piece of the article of food can be put into the cylinder I. This having been done, the grip 24 is moved to the left, when another coupling will be established between the members 26 and i6, whereupon the device will again commence to work.

Instead of the simple cord-pulley 38 a stepped pulley may be used so that the number of the different speeds can be still more increased.

I wish it to be understood that I do not limit my claims to the constructional form shown merely by way of example. Many departures in the details are possible without departing from the gist and essence of the invention.

I claim:

A feeding device for the material to be cut on food cutting machines, comprising in combination a feeding cylinder, a piston adapted to vertically reciprocate in said cylinder, a spindle carrying said piston at one end, a driving gearing adapted to operate said spindle, a reversing mechanism for said gearing including a spindle feed wheel, a spindle reverse wheel and a coupling member shiftable between said feed wheel and said reverse wheel, an arm loosely carrying said coupling member, a horizontal push rod carrying said arm and adapted to bring said coupling member into engagement with said spindle feed wheel to effect the feed movement of said piston, means for locking said push rod in pushed in position, a vertical rod resting at one end on said locking means, an arm on the end of said spindle remote from said piston adapted, when said spindle approaches its extreme lower position, to bear against the other end of said vertical rod and press said vertical rod downwards to disengage said locking means, a spring on said horizontal rod adapted to pushsaid horizontal rod outwards and bring said coupling member into engagement with said spindle reverse wheel to effect the return movement of said piston, a double armed lever loosely bearing with one arm against thearm carrying said coupling member, and a vertical pin bearing against the other arm of said double armed lever and adapted to be lifted by said piston'as it nears its extreme raised position, to oscillate said double armed lever to bring said coupling member into its intermediate position out of engagement with both of said wheels to'interrupt the drive of said spindle and bring said piston to a standstill in raised position.

HERMANN SCHAUMBURG.

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