US4042203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Easel
Assignee: Individual
•
Filing: 1975-10-07
•
Granted: 1977-08-16
•
Expires: 1995-10-07
Abstract
Abstract A folding artist's easel, particularly suited for a classroom or teaching environment, utilizes square steel tubing to form a rigid triangular base, a supporting column, and a telescopic brace, with pivotal connections therebetween. The pivotal connections are substantially free of side play and along with connection of the supporting column to a mid-point of one side of the triangular base and connection of the brace to an apex opposite this side, superior stability is provided as well as a minimum required floor space to the rear of the easel, a feature which is particularly desirable in a classroom. A workpiece, such as a drawing board or canvas stretched on a frame, is securely and gently clamped to the easel by means of individually adjustable upper and lower steel cross-members which permit adjustment in the elevation of the workpiece as well as clamping a workpiece of great height. The top of the column is adapted to receive an extension for further increasing the effective height of the easel. Either or both of the adjustable cross-members may be provided with V-shaped parts for receiving the workpiece, thus firmly securing the workpiece against forward and rearward movement on the easel, or the lower cross-piece may have an upwardly opening channel for receiving the workpiece. The entire easel is preferably galvanized steel to assure a rust-free unit as well as increasing the weight of the easel. Galvanizing is particularly advantageous for the lower cross-member in that hardened paint which tends to collect on the lower cross-member may be scraped or otherwise removed therefrom without damaging the cross-member. When the easel is folded either or both the brace or the lower cross-member may be secured in place to retain the easel in its folded position, and the pivotal connection between the base and the brace interlocks with the column to prevent side movement between these parts.
Inventors
- 👤 Verona D. Warkentin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:56
CPC Classifications
A; A47; A47B; A47B97/00; A47B97/04; A47B97/08
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
124 words
An easel comprising, a base, and column and brace members, means pivotally securing said members to each other and each to spaced apart portions of said base for swinging movement about substantially parallel axes between an erect operative position and a folded position, the securing means including a bifurcated part secured to said base and embracing an end of a first of said members with the first member pivoted to said part for said swinging movement, and when in said folded position the base, column and brace are generally parallel to each other and the bifurcation of the part embraces the other of said members to hold said members against movement transversely of each other, and means for mounting a workpiece on the column.
Claim 2
Dependent Claim
124 words
An easel comprising, a base, and column and brace members, means pivotally securing said members to each other and each to spaced apart portions of said base for swinging movement about substantially parallel axes between an erect operative position and a folded position, the securing means including a bifurcated part secured to said base and embracing an end of a first of said members with the first member pivoted to said part for said swinging movement, and when in said folded position the base, column and brace are generally parallel to each other and the bifurcation of the part embraces the other of said members to hold said members against movement transversely of each other, and means for mounting a workpiece on the column.
Claim 3
Dependent Claim
38 words
An easel as set forth in claim 1 in which the first member is said brace and said brace is longitudinally adjustable for varying the attitude of said column and for retaining the easel in said folded position.
Claim 4
Dependent Claim
79 words
An easel as set forth in claim 1 in which said clamping means includes opposed receiving members for retaining said workpiece therebetween, at least a first of said receiving members having generally V-shaped means opening toward the other receiving member for receiving the workpiece therein, and said clamping means mounting said receiving members on said column for releasable adjustment toward and away from each other for clamping the workpiece between the members and varying the elevation of the workpiece.
Claim 5
Dependent Claim
22 words
An easel as set forth in claim 3 in which said V-shaped means comprises spaced apart V-shaped parts for receiving the workpiece.
Claim 6
Dependent Claim
34 words
An easel as set forth in claim 3 in which said other receiving member is a lower one of said receiving members and has a generally upwardly opening channel for receiving the workpiece therein.
Claim 7
Dependent Claim
26 words
An easel as set forth in claim 5 in which the lower receiving member is galvanized steel to facilitate removal of paint, or the like, therefrom.
Claim 8
Dependent Claim
138 words
An easel comprising, a base, and column and brace members, means pivotally securing said members to each other and each to spaced apart portions of said base for swinging movement about substantially parallel axes between an erect operative position and a folded position, a first of said members includes track means extending longitudinally thereof, a connecting portion retained by said track means for movement longitudinally of the first member, the securing means including said track means and said connecting portion, a second of said members connected to said connecting portion, and clamping means mounted on and adjustable lengthwise of said column for releasably clamping a workpiece in desired position along the column, said clamping means having a portion encircling said connecting portion for movement of the clamping means longitudinally of said first member and past said connection portion.
Claim 9
Dependent Claim
138 words
An easel comprising, a base, and column and brace members, means pivotally securing said members to each other and each to spaced apart portions of said base for swinging movement about substantially parallel axes between an erect operative position and a folded position, a first of said members includes track means extending longitudinally thereof, a connecting portion retained by said track means for movement longitudinally of the first member, the securing means including said track means and said connecting portion, a second of said members connected to said connecting portion, and clamping means mounted on and adjustable lengthwise of said column for releasably clamping a workpiece in desired position along the column, said clamping means having a portion encircling said connecting portion for movement of the clamping means longitudinally of said first member and past said connection portion.
Claim 10
Dependent Claim
51 words
An easel as set forth in claim 7 in which the first member is said column, said track means includes a longitudinally extending slot in said column, the second member is said brace, said connecting portion is a slide, and said slide and said brace being pivotally connected with each other.
Claim 11
Dependent Claim
174 words
An easel comprising, a triangular base, and column and brace members, means pivotally securing said members to each other and each to spaced apart portions of said base for swinging movement about substantially parallel axes between an erect operative position and a folded position with the column member secured generally midway along a side of said base and the brace member secured at an apex of the base opposite said side, a first of said members including track means extending longitudinally thereof, a connecting portion retained by said track means for movement longitudinally of the first member, the securing means including said track means and said connecting portion, a second of said members connected to said connecting portion, and clamping means mounted on and adjustable lengthwise of said column for releasably clamping a workpiece in desired position along the column, said clamping means having a portion substantially encircling said first member with a gap receiving said connecting portion for movement of the clamping means longitudinally of said first member and past said connecting portion.
Claim 12
Dependent Claim
174 words
An easel comprising, a triangular base, and column and brace members, means pivotally securing said members to each other and each to spaced apart portions of said base for swinging movement about substantially parallel axes between an erect operative position and a folded position with the column member secured generally midway along a side of said base and the brace member secured at an apex of the base opposite said side, a first of said members including track means extending longitudinally thereof, a connecting portion retained by said track means for movement longitudinally of the first member, the securing means including said track means and said connecting portion, a second of said members connected to said connecting portion, and clamping means mounted on and adjustable lengthwise of said column for releasably clamping a workpiece in desired position along the column, said clamping means having a portion substantially encircling said first member with a gap receiving said connecting portion for movement of the clamping means longitudinally of said first member and past said connecting portion.
Claim 13
Dependent Claim
55 words
An easel as set forth in claim 9 in which the first member is said column, said track means includes a longitudinally extending slot in said column, the second member is said brace, said connecting portion is a slide received by said track, and said slide and said brace being pivotally connected with each other.
Claim 14
Dependent Claim
75 words
An easel as set forth in claim 10 in which one of said securing means including a bifurcated part and the associated member being pivoted to said part for said swinging movement and being received within the bifurcation thereof, and when in said folded position the members and base are generally parallel to each other and the bifurcated part embracing the other of said members to hold said members against movement traversely of each other.
Claim 15
Dependent Claim
38 words
An easel as set forth in claim 11 in which said associated member is said brace and said brace is longitudinally adjustable for varying the attitude of said column and for retaining the easel in said folded position.
Claim 16
Dependent Claim
65 words
An easel as set forth in claim 12 in which said clamping means includes opposed receiving members for retaining said workpiece therebetween, an upper one of said receiving members having generally V-shaped spaced apart parts opening toward the other receiving member, for receiving the workpiece therein, and a lower one of said receiving member has a generally upwardly opening channel for receiving the workpiece therein.
Claim 17
Dependent Claim
28 words
An easel as set forth in claim 13 in which at least the lower receiving member is galvanized steel to facilitate removal of paint, or the like, therefrom.
Claim 18
Dependent Claim
210 words
An easel comprising, a rigid base, and column and brace members, means pivotally securing said members to each other and each to spaced apart portions of said base for swinging movement about substantially parallel axes between an erect operative position and a folded position, the securing means includes a bifurcated part secured to said base and embracing an end of a first of said members with the first member pivoted to said part for said swinging movement, and when in said folded position the bifurcation of said part embracing a second of said members to hold said members against movement transversely of each other, one of said members includes track means extending longitudinally thereof, a connecting portion retained by said track means for movement longitudinally of said one of said members, said securing means including said track means and said connecting portion, the other of said members connected with said connecting portion, and clamping means mounted on and adjustable lengthwise of said column for releasably clamping a workpiece in desired position along the column, said clamping means having a portion substantially encircling said one of said members with a gap receiving said connecting portion for movement of the clamping means longitudinally of said first member and past said connecting portion.
Claim 19
Dependent Claim
210 words
An easel comprising, a rigid base, and column and brace members, means pivotally securing said members to each other and each to spaced apart portions of said base for swinging movement about substantially parallel axes between an erect operative position and a folded position, the securing means includes a bifurcated part secured to said base and embracing an end of a first of said members with the first member pivoted to said part for said swinging movement, and when in said folded position the bifurcation of said part embracing a second of said members to hold said members against movement transversely of each other, one of said members includes track means extending longitudinally thereof, a connecting portion retained by said track means for movement longitudinally of said one of said members, said securing means including said track means and said connecting portion, the other of said members connected with said connecting portion, and clamping means mounted on and adjustable lengthwise of said column for releasably clamping a workpiece in desired position along the column, said clamping means having a portion substantially encircling said one of said members with a gap receiving said connecting portion for movement of the clamping means longitudinally of said first member and past said connecting portion.
Claim 20
Dependent Claim
70 words
An easel as set forth in claim 15 in which the first member is said brace, said brace is longitudinally adjustable for varying the attitude of said column and for retaining the easel in said folded position, the second member is said column, said track means includes a slot in said column, said connecting portion is a slide, and said slide and said brace are pivotally connected with each other.
Claim 21
Dependent Claim
82 words
An easel comprising, base, and column and brace members, securing means swingably connecting said base and said members one to the other between operative and folded positions and said means including a bifurcated part secured to said base and embracing an end of one of said members with the last said member swingably connected with said part, and when in the folded position the bifurcated part embracing the other of said members to hold said members against movement transversely of each other.
Claim 22
Dependent Claim
82 words
An easel comprising, base, and column and brace members, securing means swingably connecting said base and said members one to the other between operative and folded positions and said means including a bifurcated part secured to said base and embracing an end of one of said members with the last said member swingably connected with said part, and when in the folded position the bifurcated part embracing the other of said members to hold said members against movement transversely of each other.
Claim 23
Dependent Claim
50 words
An easel as set forth in claim 17 in which said bifurcated part is operatively fixed to said base, said brace is swingably connected with said part and is slidably connected with said column, and the bifurcation of said part embraces said column in said folded position of the easel.
Claim 24
Dependent Claim
15 words
An easel as set forth in claim 18 in which said brace is longitudinally adjustable.
Claim 25
Dependent Claim
128 words
An easel comprising, a generally triangular base, a column swingably secured to said base generally midway along a side of said base, said column including track means extending longitudinally thereof, a connecting part retained by said track means for movement longitudinally of said column, a brace swingably secured to said column and to said base proximate an apex of the base opposite said side, said brace being longitudinally adjustable for varying the attitude of said column and being swingably secured to said part, and means for releasably retaining a workpiece in desired position along said column, the retaining means having a portion substantially encircling said column with a gap receiving said connecting part for movement of the retaining means longitudinally of said column and past said connecting part.
Claim 26
Dependent Claim
128 words
An easel comprising, a generally triangular base, a column swingably secured to said base generally midway along a side of said base, said column including track means extending longitudinally thereof, a connecting part retained by said track means for movement longitudinally of said column, a brace swingably secured to said column and to said base proximate an apex of the base opposite said side, said brace being longitudinally adjustable for varying the attitude of said column and being swingably secured to said part, and means for releasably retaining a workpiece in desired position along said column, the retaining means having a portion substantially encircling said column with a gap receiving said connecting part for movement of the retaining means longitudinally of said column and past said connecting part.
Claim 27
Dependent Claim
20 words
An easel as set forth in claim 20 in which said column and said brace are each unitary rod lengths.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |