US3570558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuously rotating filling machine having a volumetric metering device for pulverulent or granular material
Assignee: Individual
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Filing: 1968-06-03
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Granted: 1971-03-16
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Expires: 1988-06-03
Abstract
Abstract In a continuously rotating filling machine there is provided a volumetric metering device for supplying a charge of granular or pulverulent material to cases, comprising a drum rotating about a fixed vertical shaft and having at its periphery cavities for lodging the cases to be filled, which receive in turn a charge of pulverulent material through distributing means composed of a distribution plate rotating about said fixed shaft with said drum and having vertical peripheral channels arranged opposite said cases for transferring into said cases said charge of material from a fixed supply vat of arcuate shape, during a part of the rotation of said distributing plate, each channel having an upper metering cavity containing a sliding metering piston which is integral with a horizontal arm of a vertical piece having rollers rolling on a fixed cam causing said vertical piece to move alternately up and down so that said metering piston enters said fixed vat and for extracting therefrom a charge of material which at the end of the downward stroke of said metering piston falls into said channels located above said cases.
Inventors
- 👤 Maurice D L Lachaussee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:04
CPC Classifications
B; B65; B65B; B65B1/00; B65B1/30; B65B1/36; B65B1/363; B65B1/366
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
275 words
A continuously rotating filling machine comprising a rotary drum, a fixed shaft about which said drum is rotated, housing cavities at the periphery of said rotary drum, cases to be filled being lodged in said housing cavities, distribution means for distributing an amount of said granular material to said cases, said distribution means comprising a distribution plate rotating about said fixed shaft together with said drum, a fixed supply vat containing said granular material, vertical peripheral channels arranged in said distribution plate opposite said cases for transferring into said cases a charge of said granular material from said fixed supply vat during a part of the combined rotation of said distribution plate and said drum, said fixed supply vat being arcuate, an upper metering cavity in each channel of said distribution plate, a metering piston in said metering cavity control means moving said metering piston alternately upwardly and downwardly to slide said metering piston in said metering cavity whereby said metering piston during upward movement is introduced into said granular material contained in said fixed supply vat and during downward movement is withdrawn therefrom during the travel of the channel corresponding to said metering cavity under said fixed supply vat, thereby to suck down into said metering cavity a determined quantity of material, said channel communicating between said metering cavity and said corresponding case when said metering piston is at its bottom dead point so that said quantity of material falls at the end of the downward stroke of said metering piston, by gravity, into said corresponding case located under said channel, during the time when said metering piston is at is bottom dead point.
Claim 2
Dependent Claim
275 words
A continuously rotating filling machine comprising a rotary drum, a fixed shaft about which said drum is rotated, housing cavities at the periphery of said rotary drum, cases to be filled being lodged in said housing cavities, distribution means for distributing an amount of said granular material to said cases, said distribution means comprising a distribution plate rotating about said fixed shaft together with said drum, a fixed supply vat containing said granular material, vertical peripheral channels arranged in said distribution plate opposite said cases for transferring into said cases a charge of said granular material from said fixed supply vat during a part of the combined rotation of said distribution plate and said drum, said fixed supply vat being arcuate, an upper metering cavity in each channel of said distribution plate, a metering piston in said metering cavity control means moving said metering piston alternately upwardly and downwardly to slide said metering piston in said metering cavity whereby said metering piston during upward movement is introduced into said granular material contained in said fixed supply vat and during downward movement is withdrawn therefrom during the travel of the channel corresponding to said metering cavity under said fixed supply vat, thereby to suck down into said metering cavity a determined quantity of material, said channel communicating between said metering cavity and said corresponding case when said metering piston is at its bottom dead point so that said quantity of material falls at the end of the downward stroke of said metering piston, by gravity, into said corresponding case located under said channel, during the time when said metering piston is at is bottom dead point.
Claim 3
Dependent Claim
142 words
A filling machine as claimed in claim 1, characterized in that the control means of each metering piston for moving said metering piston comprises an arm integral with said metering piston, a crosspiece integral with said arm and displaceable vertically in the guide cavity against a means which urges said crosspiece elastically downwardly, and at least one follower element mounted laterally on said crosspiece, said follower element running on a fixed cam surrounding said above mentioned fixed shaft, said cam having a raised portion on which said follower element passes, said metering piston being thus displaced in said fixed supply vat, in said metering cavity and in said corresponding channel to suction a determined quantity of pulverulent or granular material above mentioned out of said fixed supply vat and to pour it into said channel from where it falls into said case.
Claim 4
Dependent Claim
25 words
A filling machine as claimed in claim 2, characterized in that said follower elements integral with each of said crosspieces are constituted of two rollers.
Claim 5
Dependent Claim
34 words
A filling machine as claimed in claim 3, characterized in that said two rollers of each said crosspiece are arranged above each other and on either side of said fixed cam forming rolling path.
Claim 6
Dependent Claim
67 words
A filling machine as claimed in claim 4, characterized in that the above-mentioned fixed cam has the form of an annular crown and has on its upper face a raised portion at the locality of the fixed supply vat and a cavity at the locality of discharge of the metering cavity, whereas on its lower face it has a depression at the same locality of the vat.
Claim 7
Dependent Claim
63 words
A filling machine as claimed in claim 4, characterized in that the upper roller rolls constantly on the upper face of the cam as a result of the thrust of a helIcoidal spring arranged between the upper portion of each crosspiece and a crown, whereas the lower roller rolls on the lower face of the cam only at the locality of the depression.
Claim 8
Dependent Claim
33 words
A filling machine as claimed in claim 2, characterized in that the arm integral with the metering piston is displaced in an oblong vertical slot provided in the wall of the corresponding channel.
Claim 9
Dependent Claim
26 words
A filling machine as claimed in claim 2, characterized in that it comprises a micrometric screw for regulating the height of the above mentioned fixed cam.
Claim 10
Dependent Claim
35 words
A filling machine as claimed in claim 1, characterized in that the metering piston has an inclined upper face to permit the flow by gravity of the pulverulent or granular material into the corresponding channel.
Claim 11
Dependent Claim
48 words
A filling machine as claimed in claim 1, characterized in that it comprises a means for blocking the metering piston in the metering cavity to avoid the flow of the pulverulent or granular material in the channel when there is no case to be filled below this channel.
Claim 12
Dependent Claim
96 words
A filling machine as claimed in claim 10, characterized in that the means for blocking the metering piston comprises a filling funnel for the case mounted slidingly in the lower portion of the corresponding channel, and urged elastically downwards, a locking lever mounted on a pivot, one arm of the said lever cooperating with this funnel and its other arm having a nose engaging in a notch of the crosspiece located near said filling funnel so as to prevent the downward movement of said crosspiece when there is no case to be filled below this funnel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |