Patent US3997936A successfully refreshed from Google Patents.
US3997936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaning apparatus
Assignee: Abington Inc
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Filing: 1975-11-24
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Granted: 1976-12-21
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Expires: 1995-11-24
Abstract
Abstract Apparatus for removing waste, lint, dust, dirt and other accumulations of solid matter from the underside of machinery, especially textile machinery such as carding machines while the latter is in operation or not, comprising a frame designed to be installed beneath the machine on the floor on which there is reciprocally mounted a wiper arranged to travel over the floor in reciprocation so as to traverse the entire area beneath the machine, vacuum chambers at two of the opposite ends of the frame having open sides parallel to the wiper which are closed by the wiper when the latter reaches an end position and a timer operable to connect the chambers to a vacuum source as the wipers are moved to a position closing them to remove the waste swept into the chambers by the wiper. The opposite ends of the vacuum chambers are open and the vacuum connections to the chambers are situated at the mid-length thereof so that strong drafts are created as the air rushes into the open ends along the floor to the vacuum connections at mid-length which augment the lifting effect on the fibers.
Inventors
- 👤 Sumner Smith, Jr.
- 👤 Wladyslaw Typrowicz
- 👤 Horst M. Leonhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:56
CPC Classifications
D; D01; D01G; D01G15/00; D01G15/76; D01G15/82
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
171 words
Apparatus for continuously removing waste from beneath a machine, comprising a structure designed to be installed on the floor beneath the machine, a wiper supported on the structure for reciprocal movement along the floor and in engagement therewith for sweeping the entire area of the floor beneath the machine transversely in the direction of reciprocal movement, means connected to the wiper for effecting reciprocal movement thereof, a vacuum chamber at each end of the structure situated transversely of the direction of reciprocal movement of the wiper having an open side facing the wiper and open ends each of said open sides being adapted to be closed by the wiper as it moves to an and position adjacent the corresponding open side, a vacuum port midway between the open ends of each of the chamber and means for sequentially connecting each of the vacuum port to a source of vacuum simultaneously with the movement of the wiper to a position closing the open side of the corresponding one of the vacuum chamber.
Claim 2
Dependent Claim
171 words
Apparatus for continuously removing waste from beneath a machine, comprising a structure designed to be installed on the floor beneath the machine, a wiper supported on the structure for reciprocal movement along the floor and in engagement therewith for sweeping the entire area of the floor beneath the machine transversely in the direction of reciprocal movement, means connected to the wiper for effecting reciprocal movement thereof, a vacuum chamber at each end of the structure situated transversely of the direction of reciprocal movement of the wiper having an open side facing the wiper and open ends each of said open sides being adapted to be closed by the wiper as it moves to an and position adjacent the corresponding open side, a vacuum port midway between the open ends of each of the chamber and means for sequentially connecting each of the vacuum port to a source of vacuum simultaneously with the movement of the wiper to a position closing the open side of the corresponding one of the vacuum chamber.
Claim 3
Dependent Claim
70 words
Apparatus according to claim 1, wherein the wiper is a blade corresponding substantially in length to the transverse dimension of the floor on which it rests at right angles to the direction of reciprocal movement, and is pivotally supported at one edge to the means for effecting its reciprocal movement so that the distal edge trails the pivoted edge in the direction of movement of the blade along the floor.
Claim 4
Dependent Claim
49 words
Apparatus according to claim 1, wherein the means supporting the wiper for reciprocal movement along the floor comprises a flexible cable entrained about pulleys mounted on the frame midway between the sides parallel to the direction of movement to which the blade is pivotally connected midway between its ends.
Claim 5
Dependent Claim
75 words
Apparatus according to claim 1, wherein the means for supporting the wiper for reciprocal movement along the floor comprises a flexible cable entrained about pulleys mounted on the frame midway between the sides and parallel to the direction of movement and pulleys mounted at one side parallel to the direction of reciprocal movement and a double acting air cylinder at said one side to the piston of which the ends of the cable are connected.
Claim 6
Dependent Claim
24 words
Apparatus according to claim 4, comprising means for periodically reversing the air pressure supplied to the air cylinder to effect reciprocation of the blade.
Claim 7
Dependent Claim
34 words
Apparatus according to claim 4, comprising valves for connecting opposite ends of the air cylinder to a source of pressure and a timer for periodically reversing the valves to effect reciprocation of the blade.
Claim 8
Dependent Claim
59 words
Apparatus according to claim 4, comprising a cover on the frame extending along the cable, an air jet on the frame at each end arranged to deliver a jet of air along the cover and means connecting the ends of the double acting cylinder to the jets so that air exhausted from the cylinder is supplied to the jets.
Claim 9
Dependent Claim
23 words
Apparatus according to claim 1, wherein the wiper is a blade which is transversely flexible and has at its distal edge a drag.
Claim 10
Dependent Claim
18 words
Apparatus according to claim 7, wherein there are means yieldably connecting the cable cover to the end members.
Claim 11
Dependent Claim
46 words
Apparatus according to claim 1, comprising deflectors mounted at the ends of the frame transversely of the direction of movement above the vacuum chamber, said deflectors sloping downwardly and inwardly from the ends for conducting waste at the ends to the floor between the vacuum chambers.
Claim 12
Dependent Claim
146 words
Apparatus for continuously removing waste from beneath a machine, comprising a frame having spaced parallel end members and spaced parallel side members, a wiper supported on the frame parallel to the end members for reciprocation between the side members from one end to the other, said end members embodying vacuum chambers open at the sides facing each other and open at their opposite ends, means for effecting reciprocation of the blade, a vacuum port midway between the open ends of each chamber and means for individually evacuating each of the vacuum chambers through its respective port simultaneously with movement of the wiper to a closing position with respect to the respective end chambers, said end members being detachably connected at their ends to the ends of the side members to enable dismounting the side and end members to facilitate installation of the apparatus beneath the machine.
Claim 13
Dependent Claim
146 words
Apparatus for continuously removing waste from beneath a machine, comprising a frame having spaced parallel end members and spaced parallel side members, a wiper supported on the frame parallel to the end members for reciprocation between the side members from one end to the other, said end members embodying vacuum chambers open at the sides facing each other and open at their opposite ends, means for effecting reciprocation of the blade, a vacuum port midway between the open ends of each chamber and means for individually evacuating each of the vacuum chambers through its respective port simultaneously with movement of the wiper to a closing position with respect to the respective end chambers, said end members being detachably connected at their ends to the ends of the side members to enable dismounting the side and end members to facilitate installation of the apparatus beneath the machine.
Claim 14
Dependent Claim
35 words
Apparatus according to claim 11, wherein the detachable side member at one side is a rigid rod, and there are means at the ends of the end members for receiving the ends of the rod.
Claim 15
Dependent Claim
66 words
Apparatus according to claim 11, wherein the detachable side member is a rigid rod and there are bracket members at the ends of the end members containing openings for receiving the ends of the rod, means fixing one end of the rod relative to the bracket within which it is received and means yieldably connecting the other end of the rod to the other end member.
Claim 16
Dependent Claim
32 words
Apparatus according to claim 11, wherein the side member at one side is a double acting cylinder pivotally connected at its ends to the ends of the end members at that side.
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) | 1979-12-21 | 1980-06-21 | 1980-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-21 | 1984-06-21 | 1984-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-21 | 1988-06-21 | 1988-12-21 | $7700.00 | Window Closed / Lapsed |