US 2694256 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
H. R. COON, SR, ET AL FEED MECHANISM FOR PRINTING MACHINES Original Filed May 14, 1945 Nov. 16, 1954 2 Sheets-Sheet 1 E .r. I
. lliri'u 1954 H. R. COON, sR., ET AL, 2,694,256
FEED MECHANISM FOR PRINTING MACHINES 2 Sheets-Sheet 2 Original Filed May 14, 1945 United States Patent FEED MECHANISM FOR PRlNTlNG MACHINES Harold R. Coon, Sn, and Earl J. Rapp, Toledo, Uhio, assignors to Lynch Corporation, a corporation of Indiana 2 Claims. (Cl. 31-14 Our present invention relates to a printing machine for butter, oleomargarine, lard and similar products, the machine being entirely automatic in operation. This application is a division of our patent entitled Printing, Wrapping and Cartoning Machine for Butter and the Like, No. 2,592,793, issued April 15, 1952.
An important object is to provide butter feeding mechanism in the hopper of a machine of the type disclosed in our aforesaid patent, including a rotating drum at one side of the hopper having radially movable blades which project into the hopper for engaging the butter and feeding it to the printer feed worms, and which are retracted from the butter as they leave the hopper.
With these and other objects in view, our invention consists in the construction and arrangement and the combination of the various parts of our device whereby the objects contemplated are obtained, as hereinafter more fully set forth, pointed out in the claims and illustrated in the accompanying drawings wherein:
Figure 1 is a horizontal sectional view of a portion of the machine disclosed in our Patent No. 2,592,793, showing the printer worms for feeding the butter from the hop er into print forming cavities;
Figure 2 is a vertical sectional view of a portion of the machine shown in our said patent, on line 22 of Figure 1, showing our novel rotary hopper feed drum and related printer feed worm and print forming mechanism.
Figures 1 and 2 of this application are substantially the same as Figures 6 and 7 of our Patent No. 2,592,793. For facilitating cross reference, the same numerals are used in this application as in the said patent to indicate the same parts. Reference is made to said patent for a complete description of parts not described in the present ap lication.
n the accompanying drawing we have used the numeral 154 to indicate a butter hopper. Within the hopper a pair of printer worms or feed screws 156 and 158 are rotatablv mounted. The worms 156 and 158 rotate in semi-cvlindrical seats 160 and 162 of the hopper 154 with their forward ends rotating in tubular portions 16-4 of the hopper, as sh wn in Fi ure 2. The rear ends of the rms are suitably journaled in bearings 166, and the sh fts f r the worms terminate in square heads 168 (see Fi 1). The heads 168 are received in square so kets 170 of coupling members 172, which coupling members are secured as bv keying to the Worm drive sh fts 82 and 148. Suitable ackings 174 are provided t prevent escape f transmissi n grease from the transmi i n h i 12 into the hop er 154.
A per f ed mec anism is provided in the form of a m 178 r tatable in a semi-cylindrical seat 181) (s i 2). The drum 178 has radial slots 182 in e h f w i h a fee er blade 184 is mounted for radial s i 1' g movement. Op site ends of the blades are provided with rollers 186 which travel in cam grooves 188. The ro ves are f rmed in stationary cams 189 at each end of the seat 180 and are so shaped that the blades are retracted during the ri ht-hand half of the revolution (in Fig. 2) and extended during the left-hand half of the revolution. The blades 184 thereby im inge the butter in the hopper 154 and feed it downwardly toward the printer worms 156 and 158.
The feeder drum 178 is mounted on a shaft 19 and the shaft is driven by suitable gearing mechanism in a housing 192 (see Figs. 1 and 2) into which housing an eXtension 194 of the countershaft 139 projects. The sh fts 9 and 194 are connected together by a coupling 196.
The gearing within the housing 192 comprises a bevel gear 198 meshing with a bevel gear 2% on a shaft 202. The bevel gear 288 has a sprocket 284 connected by a chain 206 (see Fig. 2) with a sprocket 208 on the shaft 190. An idler sprocket 218 is mounted on an adjustable arm 212 to take up slack in the chain.
The printer worms 156 and 158 terminate just short of right and left-hand constricting nozzles 214 and 216 having outlet portions 218 and 220 which are of a size to form the length and height of a quarter pound print of butter or the like.
Practical operation In the operation of our printing machine the butter or other product to be formed into prints is placed in the hopper 154. Actuation of a motor (not shown) effects rotation of the shafts 139, 82 and 148 through suitable gearing and a drive connection, in the manner shown and described in detail in our said atent. While the butter printer worms 156 and 158 are in operation, the feeder drtun 178 is also operating. The blades 184 extend into the hopper 154 for feeding the butter downwardly toward the worms 156 and 158. These blades are retracted as they pass around the right half of the circular path, thus withdrawing them from the butter and projecting them again when they are in position to engage the butter and force it downwardly toward the worms.
As clearly seen in Fig. 2, the rotary drum 178 is positioned above the feeder worms so as to have its aXis of rotation positioned at right angles to the longitudinal axes of the worms. In this manner, concurrent drive of the rotary drum and feederworms effects a rotation of the drum in the direction of forward travel of the worms, thereby eifecting an eflicient compacting and feeding operation.
Some changes may be made in the construction and arrangement of the parts of our machine without departing from the real spirit and purpose of our invention, and it is our intention to cover by our claims such modified forms of structure or uses of mechanical equivalents as may be reasonably included within their scope.
We claim as our invention:
1. In a machine for forming prints of butter and the like, a hopper for said butter having a closed bottom, a feed Worm in said hopper adiacent the bottom thereof, said hopper being formed with a discharge aperture aligned with said worm and with a side recess above said worm opening into said hopper, a rotary drum mounted in said recess with its axis of rotation being positioned above and at right angles to the lon itudinal axis of said worm, means operatively connected with said drum for rotating said drum in the direction f f rward travel of said worm. a plurality of radially slidable blades mounted in said drum, means operativelv associated with said blades and actuated bv the rotation of said drum to proiect into said hop er those blades facing said recess opening for forcing said butter towards said worm while retracting the remai in blades into said drum, said drum being s aced a sufficient distance above said worm to provide clearance between said drum and the projected blades of said worm.
2. A machine according to claim 1 in which said means for projecting and retracting said blades include stationarv cam slots Within said drum and rollers carried by said blades and traveling in said cam slots.
References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 617,735 Godfrey Jan. 17, 1899 1,164.276 Fogarty Dec. 14, 1915 1,416.517 Sharp May 16, 1922 1,694,228 Miiller Dec. 4, 1928 2,019,002 Drohmann et al Oct. 29, 1935 2,258,288 Heft et al Oct. 7, 1941 FOREIGN PATENTS Number Country Date Australia Nov. 26, 1926 46,032 Denmark July 27, 1932