US1023544A

US1023544A - Attachment for phonographs and like machines.

Info

Publication number: US1023544A
Application number: US63600611A
Authority: US
Inventors: John D Barter
Original assignee: MARY BARTER
Current assignee: MARY BARTER
Priority date: 1911-06-29
Filing date: 1911-06-29
Publication date: 1912-04-16
Anticipated expiration: 1929-04-16

Description

J. D. BARTEIL ATTACHMENT FOR PHONOGRAPHS AND LIKE MACHINES.

APPLICATION FILED JUNE 29. 1911.

Patented App. 16, 1912.

UNITED STATES PATENT oFFIoE.

JOHN D. BARTER, OF nnwgonx, n. rearssmn'on 0F own- ALF To MARY BARTn-n,

. OF NEW YORK, N. Y.

ATTACHMENT FOR rnonodnei ns mm mkii 'iaacnmns.

s ecif cation of Letters Patent.

Patented Apr. 116, 1,912.

Application filed June '29, i 1 Serial in. 636,006.

My invention relates to an attachment adapted to be used in connection with-a pho' nograph or other similar sound reproducing machine and has for its object to produce an instrument that will amplify the sounds reproduced from the record and which shall accomplish this without impairing the timbre and tone qualities of the record being translated, a defect that is common to amplifying horns such as are usually employed in connection with sound reproducing machines; and which often renders their use, especially in parlors and small apartments, objec'tionablc.

The invention will be hereinafter described and is illustrated in its preferredform in the accompanying drawings, where n I v Figure 1 is a side view of an instrument embodying my invention applied to a sound reproducing or talking machine of a welllrnown type. Fig. 2 is a rear elevation of the attachment. Fig. 3 is a front elevation of the same, the front. wall. of the casing being removed. Fig. 4 is a similar view to Fig. 3 with the sounding boa rd removed and parts being iii-section. Fig. 5 is a longitudinalsectional view through the com )lete attachment. Fig. (l is an elevatipn o the soundin oard detached, Fig. 7 15 an edge view 0 the sounding-board drawn to a larger scale. 'Figs. 8 and-fl are detached views of the support for the attachment.

In the accompanying drawings A designates the casing of a talking machine, pro

vided with mechanism for supporting and ally employed with talking machines. It supported from arocking or swivel s'upwhich has an adjustable connection Iwith the casing of the instrument E. This incasing in which is mounted a sounding board, and a tubular stem or sound-conducting tube uniting the. casing with the sound box D. This tubular stem is desig nated 2 and is preferably straight, with an offset 3 atits end, adapting it to 'be readily attached to the tubular stud with which the sound box D is provided. A packing 4 of rubber. felt, or other suitable material, is provided at the end of the offset 3 for the better connection with the stem of the sound which is preferably a shallow box approkimately circular in outline and closed by end walls (3 and 7, one of which is preferably removable. The opening from the stem into the casing is preferably controlled by a gate .01 valve 8, adapted to be operated from the outside. a handle 9. By means of this valve the volume of the sound entering the casing from the sound box D may be regulate'd. \Viihin the casingfi there is mounted a souhding board 10, which I meter to form of thin and renosantwood. It seated upon a narrow ledge or seat 11 formed in or carried by the rim 12 of the casing-and is held in place bv a clamping ring 13. I have found that the volume of the tones reproduced by the sounding board is increased if-the latter has formed in it a number of perforations 14, and that the best effects a're produced if these are located in a group situated between the center of the board and its periphery. I have also discovered that the clearness of the tones reproduced and their beauty is increased if i there is attached to one face of the sound ing board. surrounding or coveriiig the apertures 14.;1cell 15. which is preferably formed of thin wood like the sounding board, and consisting of a small perforated plate 16, supported at a short distance from. and substantially parallel with. the sounding board, by a wooden rim 1? which is also preferably perforated, as indicated at. 18.

In one wall of the sound casing 5, which itself is formed of rigid, resonant material,

is preferablyport JF mounted in a bracket G, extendingfrom' the casing A, by means of an arm H,

strument consists essentially of a hollow bov. The stem 2 opens into a hollow casing,

there is an opening 19 opposite the cell 15, and approximately the size of the outline of the latter.

proved if the hollow stem be open at both ends, at one end into the casing carr ing the sounding board, as described, an at the other end into the open air a's indicated at 20. This latter opening need not be large, but is important. The stem when thus con structed CODSillZlltQS an open-sounding tube communicating with the tone-producing devices atone endand .with the sounding board chamber at the other. 7

hen an instrument such as I have de scribed is applied to a sound-reproducing or talking machine, as indicated in Fig. 1. the reproduced sounds are amplified,,'but not to an undesirable degree, and are found to have, to a remarkable extent-,- the't imbre of the original sound recorded. The sounds are very clearly reproduced and the harsh, grating and metallic soundsyso often incident to the use of talking machines are reduced to a minimum, or even entirely eliminated.

\Vhat I claim is: a

1. The combination with the sound box of a sound reproducing machine, of a casing containing 5. perforated sounding board and a tubular connection between the casing and the sound box open at one end into the casiug and at the other into the atmosphere.

2. The combination with the sound box of a talking machine, of a casing inclosing a perforated sounding board, a cell carried by the board and inclosing the perforations, and a tubular connection between the casing and the sound box, and open at one end into the casing and at the other end into the atmosphere.

3. The combination with the sound box of a talking machine, of a casing inclosing a sounding board having a series of openings adjacent one edge, and a. cell carried by the board and inclosing the openings therein.

4-. The combination with the sound box of a talking machine, of a casin containing a sounding board in which are armed a number of perforations, arranged in a group 10- rated between the center of the board and its periphery, a tubular connection between the sound box and the casing, and a cell attached to the sounding board and inclosing the perforated portion thereof.

5. The combination with the sound box of a talking machine, of a casing containing a perforated sounding board, a. tubular conmg, and a cell attached to the sounding.

board and inclosing the perforated portion thereof.

6. The combination with the sound box of a talking machine, of a casin containing a sounding board in which are irmed enumber'of perforations, arranged in a group located between the center of the board and its periphery, a tubular connection between the sound box and the casing, and a cell attached to the sounding board and covering. the perforations therein. 7 7. The combination with the sound box of a sound reproducing machine, ofa casing of rigid resonant material, asounding board supported therein. the board being perfo rated, a cell attached to the'sounding board and. covering the perforated portion thereof, consisting of a thin perforated plate substantially parallel with and a short distance from the face of the sounding board, and a rim uniting the said plate with the sounding board, and a tubular connection between the casing and the sound box.

8. The combination with the sound box of a sound reproducing machine, of a casing of rigid resonant material, a sounding board supported therein, the board being perforated. a cell attached to the sounding board and covering the perforated portion thereof, a tubular connection between the casing and the sound box open at both ends, at one to the atmosphere and at the other into the casing, and a valve controllingthe opening between the tubular connection and the casing, the wall of the casing opposite the cell being perforated. p 9. The combination with the sound box of a sound reproducing machine, of. a casing, a sounding board supported therein and having a series of openings therein, a cell attached to the sounding board and covering the perforated portion thereof, and a tubular connection between the casing and the sound box.

10. The combination with the sound box of a reproducing machine, of a casing, a sounding board supported therein and having a series of openings therein, a cell attached to the sounding board and covering the perforated portion thereof, the casing having an opening opposite the cell, and a tubular connection between the casing and the sound box.

JOHN D. BARTER.

Witnesses:

JOHN S. BARKER, Geo. B. Prrrs.