US191579A - Improvement in easels - Google Patents

Improvement in easels Download PDF

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Publication number
US191579A
US191579A US191579DA US191579A US 191579 A US191579 A US 191579A US 191579D A US191579D A US 191579DA US 191579 A US191579 A US 191579A
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Prior art keywords
easels
shelf
improvement
ratchets
pawls
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Assigned to SELKIRK, INC., TA LIQUIDATION CORP., JUSI HOLDINGS, INC., KLI, INC., SELKIRK CANADA U.S.A., INC., USI AMERICAN HOLDINGS, INC., SANITARY-DASH MANUFACTURING CO. INC., PH PROPERTY DEVELOPMENT COMPANY, ZURN GOLF HOLDING CORPORATION, TRIMFOOT CO., LCA (NS) INC., ARROW CONSOLIDATED CORPORATION, PROGRESSIVE LIGHTING, INC. (NC), ZURN INDUSTRIES, INC., IXL MANUFACTURING COMPANY, INC., COLUMBIA MATERIALS, LLC, SUNDANCE SPAS, INC., UNITED STATES BRASS CORP., NEPCO OF PAKISTAN, INC., ASTERIA COMPANY, COLUMBIA LIGHTING-LCA, INC., ZURN (CAYMAN ISLANDS), INC., ELJER PLUMBINGWARE, INC., JACUZZI WHIRLPOOL BATH, INC., ENVIRONMENTAL ENERGY COMPANY, BRUCKNER MANUFACTURING COP., PRESCOLITE LITE CONTROLS, INC., ZURNACQ OF CALIFORNIA, INC., PROGRESS LIGHTING, INC., GARY CONCRETE PRODUCTS, INC., ZURN DEVCO, INC., USI FUNDING, INC., SPAULDING LIGHTING, INC., NEPCO OF CANADA, INC., DUAL-LITE MANUFACTURING, INC., ZURN EPC SERVICES, INC., JACUZZI INC., LIGHTING CORPORATION OF AMERICA, INC., ELJER INDUSTRIES, INC., STRATEGIC CAPITAL MANAGEMENT, INC., LUXOR INDUSRIES, INC., COMPAX CORP., KIM LIGHTING INC., ZURN CONSTRUCTORS, INC., GATSBY SPAS, INC., NEPCO OF AUSTRALIA, INC., PRESCOLITE, INC., PROGRESSIVE LIGHTING PROPERTIES, INC., LOKELANI DEVELOPMENT CORPORATION, LCA GROUP INC., PROGRESSIVE LIGHTING, INC. (SC), REDMONT, INC., COLUMBIA LIGHTING, INC., COLUMBIA LIGHTING MFG., INC., NEPCO OF FULTON, INC., DUAL-LITE INC., HL CAPITAL CORP., BAYLIS BROTHERS, INC., USI PROPERTIES, INC., MAILIKAI LAND DEVELOPMENT CORPORATION, STREAMWOOD CORPORATION, ZURCO, INC., SELKIRK EUROPE U.S.A., INC., MOBILITE INC., AMES TRUE TEMPER, INC., U.S. INDUSTRIES, INC., AMES TRUE TEMPER PROPRETIES, INC., COLUBMIA LIGHTING PROPERTIES, INC., USI CAPITAL, INC., UGE LIQUIDATION INC., EZ HOLDING, INC., TT LIQUIDATION CORP., USI REALTY CORP., USI ATLANTIC CORP., BATHCRAFT INC., OUTDOOR PRODUCTS LLC, USI GLOBAL CORP., ARCHITECTURAL AREA LIGHTING, INC., NISSEN UNIVERSAL HOLDINGS INC., CARLSBAD CORP., NEPCO OF FORD HIGHTS, INC. reassignment SELKIRK, INC. RELEASE OF SECURITY INTEREST IN INTELLECTUAL PROPERTY Assignors: WILMINGTON TRUST COMPANY AS CORPORATE TRUSTEE
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters

Definitions

  • N-PETRS PHOTO-LITHOGHAPNER. WASHINGTON, D O,
  • the object of my invention is to improve on the easels now used by the addition of a novel device, by which the canvas can be easily and quickly raised and lowered, and which device will keep the canvas steady at any height to which it may be raised or lowered.
  • My invention is intended particularly for easels made with a frame having parallel sides, and is equally adapted for use in upright or sloping easels; but, for convenience of illustration, I have shown it as attached to an upright easel, in which A represents the base, B B the posts, and O the cross-bar. Dis the shelf on which the bottom of the canvas rests, and E is a rest for the back of the canvas, attached to the shelf, and made to slide in a dovetail in the cross-bar 0.
  • My invention obviates this difi'iculty.
  • the shelf is held in such a way that it cannot wabble, and,in whatever position it may be placed, it will support all the weight which could be placed upon it without a chance for a slip,
  • a spring might be employed to hold the pawls to the ratchets; but I prefer the weight, as it is more simple.
  • My'invention can also be applied to easels which are not framed, but which have a single post, by placing the ratchets on the outer side of the posts.
  • the ratchets G G affixed to the postsB B, in combination with the rod J, weighted handle M, and clutches N, afiixed to the shelf D, the rod J having pawls H H at its ends to engage with the ratchets G G, as described.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Description

F. S. FROST.
EASEL.
Patented June 5,1877.
N-PETRS. PHOTO-LITHOGHAPNER. WASHINGTON, D O,
UNITED STATES PATENT OFFICE FRANCIS S. FROST, OF ARLINGTON, MASSACHUSETTS.
IMPROVEMENT IN EASELS.
Specification forming part of Letters Patent No. 191,579, dated June 5, 1877; application filed January 23, 1877.
To all whom it may concern:
Be it known that I, FRANCIS S. FRosT, of Arlington, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Easels, which improvement is fullyv set forth in the following specification and accompanying drawing, in which- Figure 1 shows a front elevation of my easel. Fig. 2 is a section through the line so a and the other figures show details.
The object of my invention is to improve on the easels now used by the addition of a novel device, by which the canvas can be easily and quickly raised and lowered, and which device will keep the canvas steady at any height to which it may be raised or lowered.
My invention is intended particularly for easels made with a frame having parallel sides, and is equally adapted for use in upright or sloping easels; but, for convenience of illustration, I have shown it as attached to an upright easel, in which A represents the base, B B the posts, and O the cross-bar. Dis the shelf on which the bottom of the canvas rests, and E is a rest for the back of the canvas, attached to the shelf, and made to slide in a dovetail in the cross-bar 0.
As at present constructed, most easels are adjusted by means of a set-screw in the center of the shelf, with guide-pins on either side; but this construction makes the shelf liable to wabble, and it is not held in its place by an unyielding support.
My invention obviates this difi'iculty. The shelf is held in such a way that it cannot wabble, and,in whatever position it may be placed, it will support all the weight which could be placed upon it without a chance for a slip,
and at the same time it down with great facility.
To accomplish this result I place upon the posts B B ratchets G G, made to engage with pawls H H on the end of a rod, J. This rod J is journaled onto the shelf K, and has in front a Weighted handle, M, to throw the pawls into the ratchets. A clutch, N, holds the shelf to the posts.
To raise the shelf it is only necessary to lift it, and the pawls will enter the ratchets, and hold it wherever it may be left. To lower the shelf, a pressure on the handle M disengages the pawls, and it will drop by its own weight the required distance, when, by releasing the handle, the pawls will again engage, thus giving absolute stability to the shelf, it being firmly supported on each side.
Instead of the weighted handle, a spring might be employed to hold the pawls to the ratchets; but I prefer the weight, as it is more simple.
My'invention can also be applied to easels which are not framed, but which have a single post, by placing the ratchets on the outer side of the posts.
Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-
The ratchets G G, affixed to the postsB B, in combination with the rod J, weighted handle M, and clutches N, afiixed to the shelf D, the rod J having pawls H H at its ends to engage with the ratchets G G, as described.
F. S. FROST.
can be moved up or
US191579D Improvement in easels Expired - Lifetime US191579A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2736526A (en) * 1952-06-02 1956-02-28 Robert A Forbes Lifting device for lifting heavy objects

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2736526A (en) * 1952-06-02 1956-02-28 Robert A Forbes Lifting device for lifting heavy objects

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