US641784A - Attachment for book-supports. - Google Patents

Description

Patented Ian. 23, l900.

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w. A. LUBY.

ATTACHMENT FOR BOOK SUPPORTS (Application filed Apr. 17, 1899.)

(No Model.)

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WILLIAM ARTHUR LUBY, OF KANSAS CITY, MISSOURI.

ATTACHMENT FoR BOOK-SUPPORTS.

SPECIFICATION forming part of Letters Patent No. 641,i'84=, dated January 23, 1960. Application filed April 17; 1899- Serial No. '71 S ,421. (No model.)

To ctZZ whom it may concern.-

Be it known that I, WILLIAM ARTHUR LUBY, of Kansas City, Jackson county, Missouri, have invented certain new and useful Improvements in Attachments for Book-Supports, of which the following is aspecification.

My invention relates to attachments for book-supports; and my object is to produce a folding attachment of simple, cheap, and durable construction which performs its function of holding a book open at the desired point and'which can be properly and cheaply attached to the music stands or racks in common use without interfering with the folding or unfolding of the stands or racks.

With this object in view the invention consists in certain novel and peculiar features of construction and combinations of parts, as will be hereinafter described and claimed, and in order that it may be fully understood I will proceed to describe it with reference to the accompanying drawings, in which Figure 1 represents a front view of a music rack or stand of a type in common use provided with an attachment embodying my invention. Fig. 2 is a detail perspective view of the attachment with the leaf-holding arm in its folded or inoperative position. Fig. 3 is a horizontal section of the music-rack provided with my attachment, the leaf-holding arm of the latter being folded to its inoperative position.

In the said drawings, Adesignates a musicrack of the collapsible or folding type, and B a shelf or rest projecting from the lower edge of the rack and forming a part of the same.

0 designates a spring-rod of suitable length and provided at its inner end with an eye D, through which a rivet E extends and unites it permanently to the shelf or one section of the shelf B. This rod 0 underlies said shelf and has its enlarged or outer end F projecting slightly beyond the contiguous end of the shelf, said enlarged end being vertically bifurcated and bent upward slightly and carrying a pivot-pin G, the latter occupying about the same horizontal plane as the shelf.

H designates the leaf-holding arm of the attachment, said arm being by preference of greater length than the rod 0 and provided with a curved or hook-shaped end I, terminating in a circular head or enlargement J,

which is pivoted on the pin G within the bi furcation of the enlargement F of rod 0, the curvature of the hook end of rod II being such that when the rod is thrown pivotally in the direction indicated approximately by the dotted arrow, Fig. 1, said curved portion of the rod snugly embraces the under sideof the curved end of the enlargement F and its straight portion extends approximately par allel with rod 0 and underlies the latter and the shelf B. Said arm H will maintain its inoperative position when the rack is open, because of the frictional relation existing between it, the bifurcated enlargement F, and the pivot-pin G, this friction being sufficient to support it in such position or at any point to which it may be adjusted. When in its operative position, as shown in full lines, Fig. 1, it extends diagonally of and against one face of the open book or sheet upon the rack and holds it wide open, and owing to the fact that it swings pivotally upon the pin Gr it is obvious that it may be used in connec tion with a very small book or the largest that can be placed upon the rack. As shown in Fig. 1, the arm is in position for engage ment with the leaf of a book of any particu lar size. When a large book is upon the rack, the arm may be swung outward, so that it bears against the leaf near its outer margin, and consequently does not hide or obscure the printed matter upon the page.

By reference to Fig. 3 it will be noticed that the arm H naturally lies close to the face of the rack and in position for convenient engagementwith a sheet of music or thin book; but it will also be noticed that the outer end of rod 0 may be sprung outward or forward, as indicated by the arrow, same figure,in order to increase the distance between the arm H and the upright portion of the rack, that the former may conveniently engage a thick book. This it will hold reliably, of course, because the tendency of the rod O,riveted tightly to the rack-shelf, as at E, is to spring back in the direction opposite to that indicated by the arrow, Fig. 3, and therefore press the arm Hfirmly against the face of the book.

Preliminary to folding the rack the arm H is grasped and thrown in the direction indicated by the arrow to its inoperative position, as shown in dotted lines, Fig. 1. The rack may then be folded in the customary manner without reference to the attachment, as will be readily understood.

I am aware that various devices, some of which embody spring-arms, have been employed for holding the leaves of books open; but I am not aware that a device has been employed consisting simply of a spring-rod secured to the shelf of the music-rack and provided with a pivoted arm which may be caused to occupy an operative position above the shelf or an inoperative position below the shelf and occupying the last-named position be entirely out of the way, but always ready for instant use when required. It is obvious that this attachment is susceptible of minor changes in construction, form, or proportion. Consequently I do not restrict myself to the precise embodiment shown.

Having thus described the invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination of a book-support having a shelf, a substantially straight springrod secured firmly to and extending approximately parallel with and projecting beyond the end of said shelf, and an arm pivoted to the free end of the spring-rod so as to swing in a plane substantially parallel with the face of the support, and to occupy an operative position at an angle to the spring-rod and above the shelf, or an inoperative position below the shelf and substantially parallel with the said spring-rod,substantiallyas described.

2. The combination of a book-support, having a shelf, a rod underlying the shelf of the book-support, and having one end riveted to said shelf and the other projecting beyond the end of said shelf and bent upward and bifurcatedvertically, a pivot-pin carried by the bifurcated end of said rod, and an arm frictionally pivoted upon said pin and in said bifurcation, and having its pivoted end of substantially hook form, or curved, substantially as described.

In testimony whereof I affix my signature in the presence of two witnesses.

W'ILLIAM ARTHUR LUBY.

Witnesses:

M. R. REMLEY, H. G. RODGERS.

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