US1322719A

US1322719A - Piano-truck

Info

Publication number: US1322719A
Authority: US
Publication date: 1919-11-25
Anticipated expiration: 1936-11-25

Description

F. E. NELSON,

PIANO TRUCK.

APPLICATION FILED MAY l3. I918.

1 322,71 9, Patented Nov. 25 1919.

I will I M w firm 1441 .4

truerstares manna FRANK NELSON; OF MINNEAPOLIS, MINNESOTA.

PIANO-TRUCK.

@ Specification of Letters Patent. Patented NOV. 25, 19 19.

' AppHcation filed May- 13, 1918. Serial No. 234,176.

To all whom it may camera." 7

Be it'knownjthat I, FRANK E. NELSON,

' a citizen of the, United States, residing at which a piano of the grand type may be secured for the convenient and easy moving thereof from one point to another, without the possibility of any strain upon its casters or the legs, which frequently results in damage or injury thereto when the piano is being moved over a rough fioor or deep pile carpet, and especially when a piano is in use upon a'stage in a theater or other place of amusement.v

Another ob'ect of the invention is the provision of a truck of this character which can be readily and easily adjusted for use with different sizes of pianos and which may be readily folded when not in use to occupy the least possible space when stored or transported from one locality to another. i

A further object of the invention is the provision of a truck of this character, which will be light in weight, and of low manufacturing cost yet possessing the required strength and rigidity. I

7 Other objects will be in part obvious and in part hereinafter pointed out.

The invention accordingly consists of the features of construction and arrangement of elements hereinafter set forth and illustrated in the accompanying drawing, while the scope of the application of which will be indicated in the following claim.

In the accompanying drawing Figure 1 is an elevation of the truck constructed 'in accordance Wltll'tllB invention supporting a piano.

Fig. 2 is atop plan view of the truck with the piano removed.

Fig. 3 is a fragmentary detail sectional vv ewtaken on the line 3-3 of Fig. 2.

Fig; dis a sectional viewon the line 4 '-;1 ofFig.2. I l

Fig. 5 is an elevation of one ofthe caster plates of the truck.

Similar reference characters indicate corresponding parts throughout the several viewsin the drawing.

Referring to the drawing in detail, A

designates generally the piano truck which comprises a series of swingingly connected arms, preferably three in number, each ineluding anouter tubular rod section 5 and an inner solid slidable rod section 6 which telescopes within the inner end of the tubular rod section 5, which inner end of the latter is reinforced through the medium of an external collar 7 The inner end of the slidable rod section 6 is formed with an eye 8 and threaded in the collar 7 is a set screw -9 which works through the tubular section 5 to engage the slidable section 6 for securing the same in adjusted position. It will be evident that the arms can be lengthened and shortened by adjusting the slidable section 6 relative to the tubular section 5 thereof.

The inner eye ends 8 of the slidable section 6 are connected through the medium of a detachable pivot 10' for, swingingly connecting the arms to each other so that they may 'be adjusted as the occasion may require.

On the outer ends of the tubular rod sections 5 are angle plates each having its vertical flange 11 fixed centrally to the outer endof the corresponding rod section 5. The

horizontal base portion 12 of each'plate is formed with a central opening 1370f a size suflicient to receivethe caster 14 in a piano plate. On opposite sides of the opening 13 in the base portion 12 of the angle plate and rising therefrom are socket sleeves or V thimbles 16 which have split contracted upper ends 17 for frictionally gripping the stems 18 of casters 19 which are removably fitted in said sleeves or thimbles 16 and held sw-iveled therein. The casters, including the stems 18, are of the ordinary well known construction employed with articles of furniture. V V

The mounting of the casters 19in the angle plates movably support the truck structure upon a floor or-foundation and these casters 19 properly elevate the piano supported upon the truck above the 'floor or foundation and enable the convenient movementiof the piano from one point to another, it being understood of course that the angle plates receive the three legs of the piano, while the arms serve as braces.

On each 'rod'section 5 is a loop 20 in which is engageda holding strap 21 of any approved form to retain the piano upon the truck. It is of course to be understood that the casters can be varied or changed as the.

, occasion may require.

As shown in the drawlngs, the sleeves or thimbles 16 are spaced from each other'and lie at opposite sides of the openings 13, these sleeves or thimbles thus forming stops for the reception of the feet of the piano there-- between to prevent the feet from shifting laterally from the base portions 12 of the angle plates, while the straps 21 hold the piano feet between the sleeves or thimbles 16.

What is claimed is A piano truck comprising aplurality of relativelyadjustable telescopic arms, plates 7 1 carried by the ends-of the arms for the .re-

ception of piano feet thereupon, said plates having openings therein for the reception of piano casters carried by piano feet restingupon the plates, upstanding downwardly opening socket members carried by the plates at opposite sides of their openings, said socket members being spaced forthe reception of piano feettherebetween, and

In testimony whereof, I aflix my signature,

Witnesses: v a

G. C. JOHNSON, H. OFTEDAL.