US2191806A - Dial feed mechanism - Google Patents

Description

Feb. 27, 1940. PEYSER AL 2,191,806

DIAL FEED MECHANISM Filed March 21, 1939 .4 Sheets-Sheet l INVENTORS lmnardftiiwer Q/ WQK ATTORNEY Feb. 27, 1940. L. F. PEYSER ET AL DIAL FEED MECHANISM 4 Sheets-Sheet 4 Filed March 21, 1939 INVENTORS Zeanardifieqser ifir/rard 6 [Jansen Wat,

ATTO R N EY Patented Feb. 27, 1940 DIAL FEED MECHANISM Leonard F. Peyser, Mount Vernon, and Richard C. I Hansen,"Eastcheste1-, N. Y., assignors to Peyser- Hansen Machine 00., Inc., Mount Vernon, N. Y., r

a corporationof New York Application March 21, 1939, Serial No. 263,148

I 4Claims. This invention relates to machines of the characterthat employ an intermittently rotatable dial feed to. move a body, such as a container; into and out of position.

'The invention is an improvement on the construction shown in Letters Patent No. 1,987,209 of January 8, 1935. In the construction shown in that patent a cam and 'a clutch were employed to efl'ect the turning movement of the dial feed shaft whereby it was possible to utilize a'considerable portion of the revolution of the cam to produce the turning movement of said clutch and shaft. Difliculties were, however,- encountered in obtaining accurate indexing of said .dial feed shaft. It is the main object and feature of this invention to obtain more accurate indexing of thedial feed shaftby omitting the clutch, while retaining the advantages of utilizing a large portion of the working cycle of the apparatus in which to effect'a turning movement of the dial feed shaft. v

In the accompanying drawings the invention is disclosed in a concrete and preferred form in Fig. 6 is a horizontal sectional View substan-.

tially on the plane of line 66 of Fig. 1; and

Fig. 7 is a diagrammatic view similar to Fig. 2 showing the movement of certain parts.

I indicates a reciprocatory pedestal to receive a body; such as container 2, so that a cover 3 may be seamed to said body by seaming rollers 4 in a well understood manner; 5 indicates a dial feed, the wings of which move the containers from a suitable conveyor (not shown) to the pedestal and, after the seaming operation has 'been completed, off the pedestal. 8 is a dial feed shaft which is turned intermittently a fraction of a revolution'to effect the discharge and feed of the containers. ing here one revolution to each reciprocation of the pedestal, and this shaft carries a cam 8 that ac'tuates cam lever 9, pivoted at H), and thereby effects up and down movement of the pedestal by the forked end of said lever engaging yoke I l l is a cam shaft, makhaving a spring I2 that engages collar l3 pinned at [4 to the pedestal. Y.

The means for driving the dial feed shaft are as follows; I5 indicates a driving ratchet keyed to shaft 6 and i6 is a driving pawl to engage the driving ratchet. Said driving pawl is actuated from transmission member ll, here in the form of a gear, mounted loosely on dial feed shaft 6. Driving pawl H5 is not carried directly on transmission member H, but is pivoted at l8 1 on a ring I 9 mounted loosely on an upper extension Ell of gear i1. 2! indicates a block slidable in groove 22 of extension 2t and ring J9, and'this block is carried by a bolt 23 mounted in ring I9. 24 is a spring that is interposed between block 2| and the end of groove 22. 25 is a spring that urges driving pawl it into engagement with driving ratchet 95. 2t is a stop pawl pivotally mountedat 21 on an extension of the framework to engage driving ratchet l5 and thereby prevent backward rotation. It will be seen from the foregoing that oscillation of gear I! will, through the yielding connection afforded by block 2| and spring 2t, oscillate ring l9 and thereby cause driving pawl It to intermittently turn driving ratchet i5, and thereby dial feed shaft 6, a fraction of a revolution.

28 indicates an indexing ratchet mounted fast on dial feed shaft 6 so as to move in unison therewith and with driving ratchet l5, the teeth or, said indexing ratchet in the present instance facing in a direction opposite to that of the teeth of the driving ratchet. 29 is an indexing pawl that is moved out of and into the path of the indexing ratchet so as to permit driving ratchet l5 to advance shaft 6 and so as to positively limit the advancing movement thereof. Indexing pawl 29 is carried by an arm 30 pivoted at 3|,

7 said arm 30 being oscillated by cam 32 on shaft j spring that urges roll 33 against cam 32.

The means for oscillating gear I! are in the present instance as follows: 35 is a gear sector that meshes with H and is carried by an arm 36 pivoted at 3| and receiving its motion from cam 31 on shaft l. 38 is a cam roll carried by arm.36 and engaging cam 31.

It will now be understood that rotation of cam. shaft! causes, during each of its revolutions, pedestal l to be lifted and lowered, and dial feed shaft 6 to be advanced a step and to be properly indexed and stopped. The throw of cam 31 and the amplitude of the movement of gear sector 35 are such that gear IT has agreater stroke than that required by driving pawl Hi to advance driving ratchet l5 the proper distance. This excess movement is indicated by the dotted line position of the parts in Fig. '7, and the object of this overstroke is to render certain that the dial feed shaft will always be advanced sufficiently. Indexing pawl 29, by its movement into the path of indexing ratchet 28, will prevent the excess movement being transmitted to driving pawl l6 because when said indexing pawl stops the indexing ratchet it will also stop the driving ratchet and ring [9 and the excess movement will be taken up by the yielding connection consisting of block 2| and spring 24.

We claim: 1. In a dial feed mechanism in which a dial feed shaftis intermittently turned a fraction of a revolution in one direction only: a driving ratchet mounted fast on the shaft, an indexing ratchet, also mounted fast on the shaft; a driving. v

pawl to engage the driving ratchet; an oscillatory transmission member, to actuate the driving ratchet, mounted loosely on the shaft; an indexing pawl, to engage the indexing ratchet, mounted independently of the shaft and transmission member; and means to move the indexing pawl out of and into the path of the indexing ratchet to thereby allow the driving pawl to move the driving ratchet and to limit the movement of the driving ratchet. i

2. In a dial feed mechanism in which a dial feed shaft is intermittently turned a fraction of a revolution in one direction only: a driving ratchet mounted fast on the shaft; an indexing ratchet, also mounted faston the shaft; a driving pawl to engage the driving ratchet; an oscillatory transmission member, to actuate the driving ratchet and having a greater stroke than that required by the driving pawl, mounted loosely on the shaft; a yielding connection between the osout of and into the path ofthe indexing ratchet to the teeth of the driving ratchet; a driving pawl,

to engage the driving ratchet; an oscillatory,

transmission member, to actuate the driving ratchet, mounted loosely on the shaft; an indexing pawl, to. engage the indexing ratchet, mounted independently of the shaft and transmission member; andmeans to move the indexing pawl out of and into the path of the indexing ratchet to thereby allow the driving pawl to'move the driving ratchet and to limitthe movement of the driving ratchet.

4. In -a dial feed mechanism in which -a-dial feed shaft is intermittently turned a fraction. of

a revolution in. one direction only: a driving ratchet mounted fast on the shaft; an indexing ratchet, also mounted fast on the shaft, the teeth of which face in the direction opposite tothat of the teeth of the driving ratchet; a driving pawl to engage. the driving ratchet; an oscillatory transmission member, to actuate'the driving ratchet and having a greater stroke than that required by the driving pawl, mounted loosely on the shaft; a yielding connection between the oscillatory member and driving pawl; an indexing pawl, to engage the indexing ratchet, mounted independently of the shaft and transmission member; and means to move the indexing pawl out of and into the path of the indexing ratchet to thereby allow the driving pawl to move the driving ratchet and to limit the. movement of the driving ratchet and driving pawl. v p

- LEONARD F. PEYSER.

RICHARD C. HANSEN.

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