US 1114921 A
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Description (OCR text may contain errors)
I. E. SELSTAD.
ADJUSTABLE SHELF BRACKET.
APPLICATION FILED MAY 26, 1914.
1,1 14,921 Patented Oct. 27, 1914.
' lowing to be a full, clear,
. improvement INGVALD E. BELSTAD, OF KINGSVIILE, TEXAS.
Specification. of Letters I'atent.
Patented Oct. 2'7, 1914.
Application filed May 26, 1914. Serial No. 841,056.
To all whom it may concern:
Be it known that I, INov'ALo E. SELSTAD, a citizen of the United States, residin at Kingsville, in the county of Kleberg, S tate of Texas, have invented certain new and useful Improvements in Adjustable Shelf- Brackets; and I do hereby declare the foland exact description of the invention, such as will enable Others skilled in the art to which it appertains to'make. and use the same.
This invention relates to shelf brackets, particularly to the type of bracket which is angularly adjustable, and has for its object the provision of a novel shelf bracket which is adapted to be secured upon a ladder, table, post, or other place, and which may be angularly adjusted so as to form means for supporting articles in a horizontal position.
An important object is the provision of a bracket of this character articularly adapted to be attached to lad ers for forming a suitable support for maintaining a paint pail or other article in a horizontal osition, the parts of the bracket being so a justably connected that any vertical or lateral angularity of the position of a ladder may be compensated for.
Another object is the provision of a bracket of this character, the parts of which will be rigidly connected when in their adjusted positions, whereby accidental displacement of the parts is positively prevented.
Other objects and advantages, such as simcheapness in manufacture, efficiency indestructibility and the general of the art will be carefully brought out in the following description and illustrated in the accompanying drawings, in which,
Fi applled to a ladder. view through one rail my device in top plan, tional view on the line Fig. 4 is a detail view.
Referring more particularly to the drawing, the numeral 5 designates a substantially U-shaped member adapted to be secured preferably upon the rail 6 of a ladder and having one of its arms provided with a screw-threaded opening for the reception of a clamping screw 7 provided at one end with a swiveled plate 8 and at the other end with the usual finger engaging wings. The memin service,
re 1 1s a side elevation of my device Fi 2 is a sectional of t e ladder, showing Fig. 3 is a cross sec- 3-3 of Fig. 2, and,
her 5 is provided with an extension 10 having one face notched or corru ated for cooperation with a similarly notc ed or corrugated end of an arm 11 which is pivotally secured to the extension 10 by a clamping screw 12. By this construction it will be seen that when the screw 12 is loosened, the angular osition of the arm 11 in relation to the mem er 5 may be varied, but when the clamping screw is tightened the arm 11 will be securely clamped in its adjusted position. Thus it is seen t at the arm 11 provides for lateral angular adjustment.
In order to provide for revoluble,adjustment, I form the free end of the arm 11 with a cylindrical projection 13 provided with longitudinally extending grooves or notches, as shown. The cylindrical projection 1. cooperates with a member 14 formed on the end of an arm 15. The member 14 is formed in two sections, one section 16 being rigid upon the arm 15 and provided with a laterally extending ear 17 and the other section 18 being hinged upon the section 16, as shown at 19, and provided with an ear 20 through which extends a clamping bolt 21 engaging the ear 17. The member 14 is adapted to be clamped upon the cylindrical extension 13 and is provided internally with grooves or notches cooperating with the grooves or notches on the extension 13.
In order to'provide for vertical angular adjustment, I employ an arm 21' pivotally connected with the free end of the arm 15 by a clampin screw 22. The opposing faces of the en s of the arms 15 and 21 are grooved or notched, whereby relative movement of these arms cannot take place until the clamping screw 22 is loosened, thereby preventing accidental movement of the parts. A platform 23 is secured upon the outer end of the arm 21' and is braced thereon by a plurality of curved fingers 24.
It will be a parent from the description and a study 0 the drawings that when my device is secured upon a ladder or other supporting member, the arms 11, 15 and 21 may be so adjusted in relation to each other that the platform 23 will be held absolutely horizontal regardless of the angular inclination of the ladder or other support. desired, a suitable frame of wire or the like may be secured upon the platform 23 whereby a paint pail or other receptacle or article may be prevented from slip ing ofi'.
Although I ave shown and escribed my device as being applied to a ladder, it Wlll be readily understood that it may be used for a multitude of purposes when secured in different laces.
It will be readi y understood that I reserve the right to make various changes in the form, construction, and arrangement of parts, without departing from the spirit of the invention or subjoined claims. D
Having thus described my invention, what ll claim is l. A device of the character described comprising a substantially til-shaped plate adapted to be clamped upon a support, a
horizontally adjustable swinging arm connected therewith, a cylindrical extension on the free end of said arm, a member surrounding said cylindrical extension and revolubly adjustably clamped thereon, an
arm extending from said last named member, an arm pivotally connected with the free end of said last named arm, a clamping screw for securing said ends together, and 5 a platform secured upon said last named arm, said last named arm being ver ically adjustable.
2. A device of the character described, comprising a tit-shaped member, a clamping limiting the scope of the miaoai screw extending through one arm thereof 3 and adapted to engage a support, an arm pivoted upon said member by a clamping screw, the contacting faces of said member and said arm being provided with grooves, said arm being laterally adjustable, a cylin- 3.5 drical extension formed on the free end of said arm and provided with longitudinal grooves, a member surrounding said cylindrical extension and provided internally with longitudinal grooves coacting with the grooves in said cylindrical extension, said last named member being formed of a rigid section and a hinged section releasably clamped thereon, an arm extendin from said stationary section, an arm plvotally connected with the free end of said last named arm, the ends of said last named arms having their contacting faces provided with grooves, a clamping screw extending through said ends, and a platform secured upon the outer end of said last named arm,
in testimony whereof, I afix my signature, in the presence of two witnesses.
INGVALD E. SELSTAD.