US3893492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for accurately dispensing and consolidating powdered material into receptacles
Assignee: NOHREN FRANCES W 5170 126TH AVENUE NORTH CLEARWATER FL 33520
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Filing: 1973-08-06
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Granted: 1975-07-08
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Expires: 1993-08-06
Abstract
Abstract The invention comprises a method and apparatus for extracting a measured accurate quantity of granular or powdered material from a bulk supply, de-aerating the material in the extraction process, dispensing the material into an individual receptacle and compacting the material in the receptacle. In the preferred embodiment the invention is applied to the charging of explosive powders into bullets, detonators or other receptacles on a mass production basis. The invention utilizes a ram in tube assembly each separately actuated by a cam to descent into a bulk supply of powder with a relative motion carefully controlled to retain within the tube a de-aerated and partially compacted slug of powder. The powder is then dispensed by the ram from the tube into the bullet jacket or detonator cup with a final accurately controlled compaction stroke of the ram properly compacting the powder in the receptacle. The ram in tube assembly includes adjustments for compaction pressure and the quantity of powder and is adapted for plural use on a rotary filling machine or multiple gang type press station when incorporated within an in line pallet type transfer system.
Inventors
- 👤 John E Nohren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:28
CPC Classifications
B; B65; B65B; B65B1/00; B65B1/30; B65B1/36; B65B1/38; B65B1/385; B65B1/20; B65B1/24
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
142 words
A method for repetitively dispensing an accurate charge of particulate material from a supply container to a charge container comprising the steps of creating a predetermined volume open ended charge cavity after and while the open end of said charge cavityis submerged within said particulate material in said supply container in a manner adapted through the creation of said cavity per se to cause the filling of said cavity with said material, creating a predetermined volume reduction of said cavity while the open end of said charge cavity remains submerged within said particulate material in said supply container in a manner adapted to cause deaeration and precompaction of the charge material within said cavity, the removal of said reduced cavity with said charge material from said supply container, and the dispensing of said charge material from said cavity to said charge container.
Claim 2
Independent Claim
142 words
A method for repetitively dispensing an accurate charge of particulate material from a supply container to a charge container comprising the steps of creating a predetermined volume open ended charge cavity after and while the open end of said charge cavityis submerged within said particulate material in said supply container in a manner adapted through the creation of said cavity per se to cause the filling of said cavity with said material, creating a predetermined volume reduction of said cavity while the open end of said charge cavity remains submerged within said particulate material in said supply container in a manner adapted to cause deaeration and precompaction of the charge material within said cavity, the removal of said reduced cavity with said charge material from said supply container, and the dispensing of said charge material from said cavity to said charge container.
Claim 3
Independent Claim
103 words
A method for dispensing accurate charges of particulate material, comprising; initially inserting a tube having a displaceable ram therein extending substantially to the end of said tube into a reservoir of said material, creating relative tube, ram and reservoir movement creating a cavity within said tube while said end is submerged within said material adapted to cause material to flow into the tube, precompact and deaerate the material within the tube while said tube end remains submerged within said material, extrude excess material, retract the tube and ram with the retained material from the reservoir, and dispense the retained material from the tube.
Claim 4
Independent Claim
103 words
A method for dispensing accurate charges of particulate material, comprising; initially inserting a tube having a displaceable ram therein extending substantially to the end of said tube into a reservoir of said material, creating relative tube, ram and reservoir movement creating a cavity within said tube while said end is submerged within said material adapted to cause material to flow into the tube, precompact and deaerate the material within the tube while said tube end remains submerged within said material, extrude excess material, retract the tube and ram with the retained material from the reservoir, and dispense the retained material from the tube.
Claim 5
Dependent Claim
33 words
The method of claim 2 including the step of doctoring the end of the material in the tube by motion of said tube relative to said reservoir prior to the final dispensing step.
Claim 6
Dependent Claim
31 words
The method of claim 2 including the steps of dispensing the material into a receptacle and extending the ram into the receptacle to apply a final compaction to the dispensed material.
Claim 7
Independent Claim
96 words
A device for dispensing an accurate charge of particulate material comprising a supply conTainer, a charge tube, a displaceable ram within said tube, means for inserting one end of said tube with said ram into said supply container, means for producing relative reciprocal movement between said tube and ram while within said supply container to create a charge cavity followed by a partial reduction thereof adapted to fill, deaerate, precompact and size the charge remaining within the tube end, and means for effecting conjoint removal of said tube and ram with charge from said supply container.
Claim 8
Independent Claim
96 words
A device for dispensing an accurate charge of particulate material comprising a supply conTainer, a charge tube, a displaceable ram within said tube, means for inserting one end of said tube with said ram into said supply container, means for producing relative reciprocal movement between said tube and ram while within said supply container to create a charge cavity followed by a partial reduction thereof adapted to fill, deaerate, precompact and size the charge remaining within the tube end, and means for effecting conjoint removal of said tube and ram with charge from said supply container.
Claim 9
Dependent Claim
37 words
A device as set forth in claim 5 wherein said means for inserting is adapted to maintain the end of said ram substantially flush with the end of said tube upon initial insertion into said supply container.
Claim 10
Dependent Claim
34 words
A device as set forth in claim 5 wherein said means for producing relative reciprocal movement includes a stage of increasing tube penetration relative to said supply container during creation of said charge cavity.
Claim 11
Dependent Claim
27 words
A device as set forth in claim 5 wherein said means for producing relative reciprocal movement includes a stage of increasing tube penetration and simultaneous ram retraction.
Claim 12
Dependent Claim
39 words
A device as set forth in claim 5 wherein said means for producing relative reciprocal movement includes a stage wherein said charge cavity is reduced without tube retraction from said supply container to effect deaeration and precompaction of material.
Claim 13
Dependent Claim
71 words
A device as set forth in claim 5 wherein said means for producing relative reciprocal movement includes a stage wherein said charge cavity is reduced without tube retraction from said supply container to effect deaeration and precompaction of material followed by a stage of tube retraction relative to both supply container and ram to effect a discharge of excess material and reduction of the tube end cavity to an accurate volume.
Claim 14
Independent Claim
142 words
A device for dispensing an accurate charge of particulate material comprising a supply container, a charge tube, a displaceable ram within said tube, means for inserting one end of said tube with said ram end in flush relation into said supply container, means for producing relative reciprocal movement between said tube and ram while within said supply container including a first stage wherein the tube penetrates and the ram retracts relative to said supply container to create a charge cavity filled with particulate material, a second stage wherein the ram advances to deaerate and precompact the material within the tube, a third stage wherein the tube retracts relative to the ram and supply container to size the charge remaining within the tube end, and a fourth stage for effecting conjoint removal of said tube and ram with charge from said supply container.
Claim 15
Independent Claim
142 words
A device for dispensing an accurate charge of particulate material comprising a supply container, a charge tube, a displaceable ram within said tube, means for inserting one end of said tube with said ram end in flush relation into said supply container, means for producing relative reciprocal movement between said tube and ram while within said supply container including a first stage wherein the tube penetrates and the ram retracts relative to said supply container to create a charge cavity filled with particulate material, a second stage wherein the ram advances to deaerate and precompact the material within the tube, a third stage wherein the tube retracts relative to the ram and supply container to size the charge remaining within the tube end, and a fourth stage for effecting conjoint removal of said tube and ram with charge from said supply container.
Claim 16
Dependent Claim
18 words
The dispensing device of claim 5 where means for producing relative reciprocal movement includes a cam and follower.
Claim 17
Dependent Claim
21 words
The dispensing device of claim 5 including adjustment means for varying the relative motion limits for tube, ram and supply container.
Claim 18
Dependent Claim
26 words
The dispensing device of claim 5 including adjustment means adapted to determine the relative ram and tube positions thereby precisely determining the amount of material dispensed.
Claim 19
Dependent Claim
18 words
The dispensing device of claim 5 including ram actuating means adapted to eject the charge into a receptacle.
Claim 20
Dependent Claim
35 words
The dispensing device of claim 5 including a receptacle for said charge and ram actuating means adapted to eject the charge from said tube into said receptacle and further compact said charge in said receptacle.
Claim 21
Dependent Claim
24 words
The dispensing device of claim 16 including gauge means responsive to said ram and sensor means actuatable by said gauge means upon improper compaction.
Claim 22
Dependent Claim
19 words
The dispensing device of claim 16 including resilient means adapted to limit the compaction force produced by said ram.
Claim 23
Dependent Claim
19 words
The dispensing device of claim 18 including adjustable means adapted to adjust the compaction force of said resilient means.
Claim 24
Dependent Claim
29 words
The dispensing device of claim 5 including a container lip adapted to doctor the charge by relative movement of the tube across the lip Upon retraction of the tube.
Claim 25
Dependent Claim
89 words
A dispensing machine comprising a rotary turret, a plurality of dispensing devices as claimed in claim 5 mounted upon said turret, a pair of stationary cams concentrically mounted with respect to said turret and pairs of cam followers for each dispensing device engaging said stationary cams, means for moving said supply containers with said turret about a segmental arcuate path synchronized with the charge tube and ram assemblies, and receptacle means movable with said turret about a second segmental arcuate path synchronized with said charge tube and ram assemblies.
References Cited (Backward Citations)
US3656517A
Cited
US3656518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |