US3636663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for matting glass slides
Assignee: Propper Manufacturing Co Inc
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Filing: 1969-11-28
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Granted: 1972-01-25
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Expires: 1989-11-28
Abstract
Abstract An apparatus for matting glass slides of the type used to carry specimens to be observed under a microscope, for example. The apparatus includes a conveyor belt having an upper run for moving the slides from a receiving end of the upper run to a discharge end thereof. At the receiving end of the upper run of the conveyor belt is a chute for supplying the slides to the belt with the slides each projecting by a predetermined distance laterally beyond a side edge of the upper run. Between the ends of the upper run of the conveyor belt is a pressure roller made of a soft elastic material for pressing against each slide as the latter moves beneath each pressure roller between the latter and the upper run of the conveyor belt. In alignment with this pressure roller, beyond the side edge of the upper run of the belt, is a high-speed grinding element situated to engage a surface of each slide as it moves beneath the pressure roller. At the discharge end of the belt is a receiving receptacle to which the ground slides are automatically delivered.
Inventors
- 👤 Gerhard Menzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:59
CPC Classifications
B; B24; B24B; B24B21/00; B24B21/04; B24B21/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
223 words
In an apparatus for matting selected areas of glass slides, a conveyor belt having an upper run for conveying the slides which move with said upper run in a given direction from a receiving end to a discharge end thereof, supply means situated over said receiving end of said upper run for supplying thereto glass slides positioned on said upper run with portions of said slides extending laterally beyond a side edge of said upper run of said belt, a rotary pressure roller of soft, elastic material engaging said upper run between said ends thereof for yieldably pressing against said upper run a portion of each slide, as it moves beneath said pressure roller, at least one high-speed grinding element having a grinding surface parallel to said upper run of said conveyor belt, said grinding element being laterally aligned with said pressure roller and situated beyond said side edge of said belt along the path of movement of a surface of that part of each slide which is parallel to said upper run of said belt and extends beyond said edge of said belt for grinding each slide at a part of said surface thereof as it moves beneath said pressure roller, and receiving means situated at said discharge end of said upper run of said belt for receiving the ground slides therefrom.
Claim 2
Dependent Claim
223 words
In an apparatus for matting selected areas of glass slides, a conveyor belt having an upper run for conveying the slides which move with said upper run in a given direction from a receiving end to a discharge end thereof, supply means situated over said receiving end of said upper run for supplying thereto glass slides positioned on said upper run with portions of said slides extending laterally beyond a side edge of said upper run of said belt, a rotary pressure roller of soft, elastic material engaging said upper run between said ends thereof for yieldably pressing against said upper run a portion of each slide, as it moves beneath said pressure roller, at least one high-speed grinding element having a grinding surface parallel to said upper run of said conveyor belt, said grinding element being laterally aligned with said pressure roller and situated beyond said side edge of said belt along the path of movement of a surface of that part of each slide which is parallel to said upper run of said belt and extends beyond said edge of said belt for grinding each slide at a part of said surface thereof as it moves beneath said pressure roller, and receiving means situated at said discharge end of said upper run of said belt for receiving the ground slides therefrom.
Claim 3
Dependent Claim
20 words
The combination of claim 1 and wherein said grinding element is itself in the form of an endless grinding belt.
Claim 4
Dependent Claim
26 words
The combination of claim 1 and wherein said receiving means is in the form of a coNtainer removably situated at said discharge end of said belt.
Claim 5
Dependent Claim
46 words
The combination of claim 1 and wherein there are a pair of said pressure rollers and a pair of said grinding elements respectively aligned therewith for successively engaging each slide as it is conveyed by said upper run of said belt toward said discharge end thereof.
Claim 6
Dependent Claim
52 words
The combination of claim 1 and wherein there are a pair of said grinding elements situated one over the other and spaced from each other by a distance corresponding to the thickness of each slide for simultaneously grinding each slide at its opposed surfaces while each slide moves beneath said pressure roller.
Claim 7
Dependent Claim
33 words
The combination of claim 1 and wherein said supply means is laterally adjustable for determining the extent to which each slide extends beyond said edge of said upper run of said conveyor belt.
Claim 8
Dependent Claim
60 words
The combination of claim 1 and wherein said receiving means is in the form of a receptacle for receiving the ground slides, said receptacle having a wall extending in part around said belt at said discharge end thereof and terminating in a springy tongue engaging said belt at said discharge end thereof for removing the ground slides from said belt.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |