US2336401A - Carton holding and waxing means - Google Patents

Description

D 7 1943. T. R. JAMES I2,336,401

CARTON HOLDING AND WAXING -MEANS OriginalV Filed Oct. 12, 1940 Patented Qec. 7, 1943 2,336,401 CARTON HOLDING AND WAXING MEANS Thomas R. James, Minneapolis, Minn., assigner to General Mills, Inc., a corporation of Dela- Waffe Original application October 12, 1940, Serial No. 360,875. Divided and this application May 31, 1941, Serial No. 396,206

1 claim. (ci. sii-6o) This is a division of my application Serial No.360,875, led'October 12, 1940.

An object of this invention is the provision of means for holding a carton while wax is sprinkled thereon and for withdrawing the holding means from the carton after the wax coating is set without injuring the coating.

Another object is to provide suitable means for gripping each carton for rotation as well as means for insuring the registration of each carton in its gripping means in a suitable waxing machine.

These and other objects as will hereinafter appear, are accomplished by this invention which is fully described in the following speciiication and shown in the accompanying drawing in which Figure 1 is a partial vertical sectional view showing an embodiment of my invention;

Fig. 2 is an enlarged sectional view similar to Fig. 1 but showing the parts in more detail; and

Fig. 3 is a partial enlarged detail of one of the pins shown contacting a carton.

In portions of a waxing machine as illustrated, endless chains 1,0, 1| slide on angle irons |86 which are supported on the main frame and pass around sprockets (not shown) and carry suitable bearings 12, 13, preferably loi the universal bali type as shown in Fig. 2, in which are suitably journalled a series of gripper assemblies or units 80. Each gripper unit is adapted to grip and hold a carton C to be waxed. This carton is preferably of an elongated type having end flaps 8|, B2 and 83, the latter being coated with glue on its under side so that when pressed down it will iirmly adhere to the flaps 8| and 82. Much depends upon the proper closing and sealing of these cartons so as to get a substantially moisture-proof package after it has been waxed. The ends of these cartons, Where pressure is applied for gripping the same, consist of a plurality of overlapping flaps which aid materially in taking the necessary end pressure and also for reducing any danger or' a poor seal occurring where the points of the grippers contact the carton.

The gripping of the ends of this carton, which is preferably much longer than its other two dimensions, is accomplished by means of stationary pins 90, preferably four in number, and carried by a plate 9| secured to the frame of the gripper unit as by means of screws 92. This gripper unit has aligned end portions 93 and 94 connected by an off-set integral portion 95 which provides a suitable space 96 for the reably mounted therein is a short shaft |00 on the inner end of which is mounted a plate |0| which carries pins |02 `similar to the pins 90. The plate I0| is pressed inwardly by means of a compression spring |03 while the outer end of the shaft |00 carries a cam follower |04 which engages a stationary cam |50 as the gripper unit moves through the machine to withdraw the pins |02 for the insertion of the cartridge after which the spring |03 returns the pins so as to grip the cartridge and to hold it during the waxing operation.

The pins 90 of Fig. 2 are shown in detail in Fig. 3 and are preferably made with a screw threaded portion ||0 with a hollow center terminating in the hollow tapered end ||2. A central pin ||3, preferably a phonograph needle, is held therein by means of a driving t and this terminates in a tapered point ||4 which makes contact with the end of the carton with suiiicient pressure to depress the carton and perhaps to pierce it slightly at the point C.

Each gripper assembly is rotated by means of a. gear |41 keyed on the end portion 94 which meshes with a stationary rack (not shown). the point where the section (Fig. 1) is taken,`a cam follower roller |45 iournaled on a pin (not shown) on the side of the gear |41 and lies in a cam groove |48 in the horizontal cam |49.,

This cam terminates near the point where the stationary rack begins so as to insure the unit remaining in the desired position up to the time the gear |41 engages the rack.

Thus, the gripper unit journa1ed at its ends in the parallel chains provides means for han-l Changes, therefore, may be madenalled in said chains and having an odset U- ins one of said plates axially in said member shaped central portion adapted to hold a carton with respect to the other to cause said pinsto in axial alignment with the journals and havgrip the ends of a carton or to release the same, ing spaced axial plates, one of which is slidand means for rotating the member about its ably movable with respect to the other plate, 5 longitudinal axis t0 rotate the carton.

each plate having a plurality of pins thereon s to grip the ends of a carton, means for mov- 'THOMAS R. JAMES.

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