US1044917A - Knockdown megaphone. - Google Patents

Description

FFL. ROSE.

KNOGKDOWN MEGAPHONE. 'APPLIGATION FILED FEB. 27, 1912.

1,044,917. Patented Nov. 19,1912.

WITNESSES INVENTOR To all whom it may concern:

of New York, in the county of New York spring out into its distended position.

a of a plurality of separate strips 18, 18

required size for the particular uses to substantially fiat elements having some relapse FRANK L. ROSE, OF NEW YORK, N. Y.

KNOCKDOWN MEGAPHONE.

Specification of Letters Patent.

Patented Nov. 19, 1912.

Application filed February '27, 1912. Serial No. 680,273.

Be it known that I, FRANK L. Rose, a citizen of the United States, and a. resident and State of New York, have invented certain new and useful Improvements in Knockdown Megaphones, of which the following is a specification, taken in connection with the accompanying drawings, which form a part of the same.

My invention relates to amplifying sound devices and more particularly to a knock down megaphone which may be formedof any suitable material and of any which the megaphone is to be put.

My invention comprises such a knockdown megaphone formed of a plurality of silient means which is put under tension when the megaphone is collapsed and which will, by loosening a catch or similar device, cause the megaphone to automatically In the accompanying drawings showing illustrative embodiments of my invention and in' which the same reference numerals refer to similar parts in the several figures, Figure 1 is a side elevation of my megaphone formed of a plurality of separate connected hinged str1ps to permit the megaphone to be knocked down or collapsed into substantially the position shown in Fig. 3. Fi 2 is a detail horizontal section substantia ly onthe line 2-2 of Fig. 1 looking down in the direction of the arrows; the figurebeing shown on an enlarged scale; and F1 ..3'is a detail sectional view partly in si e elevation substantially on the line 33 of 1, the megaphone being shown col- In my invention the megaphone is formed hinged along the lines 19, 19 in any suitable manner but preferably by means of an in terposed piece of textile material 20, Fig. 2. In this form of my invention, I employ any suitable form of resilient means to automatically vdistend the sections 18, 18 when itis desired to use the megaphone. Various forms of automatic resilient means may be employed. I have shown simplyby way of illustration a resilient means consisting of coil springs 21 mounted so that their longitudinal axis would substantially coincide with one of the edges 19 of the megaphone,

one arm of the spring bears upon one of the strips 18, while the other arm :23 bears upon the tldjlCGllt strip 18. It is understood that preferably a plurality of such coil springs or resilient means are employed and preferably, though not necessarily, one coil spring for'each of the meeting edges 19 of the sections 18, 18, though this number,

'of course, may be varied without departing from my invention.

Various means 0t mounting the resilient device within'the megaphone may be employed. Simply by way of example, I have shown the two arms 22 and. 23 of the coil spring received and secured between the outer strip of cardboard 24 and the inner strip of cardboard 25, the two with the textile material 20 forming one of the built lapsing of the sections is resisted by the I resilient means which are thereby put under tension. The megaphone is held in its collapsed position against the action of the spring or springs by any suitable means. I have shown by way of example such a locking means in Fig. 3 where the head 26 is riveted to one of the bottom strips 18 and the bell 27 to the upper strip 18, the two intermediate hinge strips being preferably provided with holes to permit the head 26 to pass through them to engage the bell 27 on the upper strip. Preferably I employ two such fastening devices, as shown for example in Fig. 1, t-he'two being duplicates.

My invention is adapted for megaphones of any and every description wherein it is desirable for 'any purpose to temporarily knock them down into a minimum space to be carried, shipped or stored. My mega-' phone is adapted to be used with sound reproducing or recording devices, or simply as they can be given away by the advertiser or ing secured to difierent sold at a very low figure.

Having thus described this invention in connection with several illustrative embodiments thereof to the details of which I do not desire to be limited, what is claimed as new and What is desired to secure by Letters Patent is set forth in the appended claims.

1. In a knock down collapsible megaphone, the combination of a plurality of I hingedsections, a coil spring mounted in cent sections,

1118' with the meeting surfaces of two adjaent sections, the arms of the coil spring being secured to difierent adjacent sections. 2. a knock down collapsible megaphone, the combination of a plurality of hinged sections, a coil spring mounted in line with the meeting surfaces of two adjathe arms of the coillspring beadjacent sections, and means to hold the megaphone in its collapsed position and the springs under tension.

3. In a collapsible knock 'down megaphone, the combination of a fplurality of hinged sections, each section ormed of a plurality of built up parts, a strip of textile material in the different sections and extending between each pair of built up sections to form a hinge, one or more coil springs mounted along the meeting surfaces of two adjacent sections and provided with opposed arms which are secured between the plies of the adjacent built up sections.

FRANK L. ROSE. Witnesses:

ALAN M. JoHNsoN, Ross MENK. I

fiopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. M

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