US1074768A - Organ-pipe. - Google Patents

Description

R. Y. BARROWS.

ORGAN PIPE.

APPLICATION FILED 001227, 1911.

Patented Oct. 7, 19 13.

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W M W% Mm nm 0 M 9 4 5 34-400mm; 35 A 61-01140, 0 iv EM'ZZ-MQW 50 front of the block a and just beneath the lip .d is

v UNITED STATES PATENT OFFICE.

ROBERT Y. BABRQWS, F RUTHERFORD, NEW JERSEY, ASSIGNOR OF ONE-HALF TO GEORGE E. HABMAN, OF GLEN RIDGE, NEW JERSEY.

ORGAN-RIPE.

Specification of Letters Patent.

Patented Oct. '7, 1913.

Application filed octoberzz, 191;. Serial No. 657,128.

To all whom it may concern Be it known that I, ROBERT Y. BARRows,

' a citizen of the United States, and a resi speak out of tune.

65 tion 0 The present invention embodies a practic'al'ap lication of my earlier one, and shows how tlie lattermay be. applied to anexisting set of organ pipes without difiiculty or V inconvenience. Moreover, the improvements are also concerned with the appllcation of the invention to new pipes.

In my earlier patent, the slit through which the. a'r issues to cause the pipe to speak, was shown as being divided up into one or more sections so as to rovide a shortened slit or slits and control in 'means were also shown whereby the air mlght be made to issue through one or more of these slits to produce a different tone quality from that of the original pipe, although of -the same pitch. In accordance with the present improvements, an additional slit 15 provided for the same pur ose and it ha the advantage of leaving t e originalsli unchanged and of being made narrower'than the original slit to reduce the thickness of the sheet of air issuing therefrom, all of which. will be understood upon reference to the particulardescription of the same whichv follows.

In the drawings which illustrate the invention as applied to wooden pipes, Figure 1 is a view in central vertical section of 'a wooden pipe having the invention applied. thereto, and Figs. 2 and 3 are respectively a view in front elevation and a view in section as indicated by the line 3-3 in Fig. 1.

On reference to the drawings, 1t will be seen that the port-ion of the pipe right in rovided with a wind passage b and slit whereas in the ordinary wooden organ pipe it will be recalled that this porthe pipe is simply a solid piece of dated piece m, the latter simply servin wood, usually referredto as the ca and forms with the front edge of the look a the usual slit 0 from which the wind is discharged across the mouth of the pipe from the space 0 underneath the block. In the present case,- the old plain cap has simply been removed and a new cap substituted having the air passage and slit, as aforesaid. In constructingthis cap, a plain piece of wood like the old cap nay be cut at the top to'receivean adjustable piece mv and bored from the bottom for the air passage b, the latter being broadened out at the top to supply the whole length of the slit which is determined by the width of the piece m. For convenience in cutting the air passage and forming the slit, it'is preferable-to out said passage clear through to the rear of the cap" and then glue a relatively thin piece a to the rear of the cap. The iece n, as can readily be seen from the drawlng, forms two slits, one with the block a, which is the usual slitof" the pipe ,a'nd'extends substantially the full width thereof, and the other with the adjustable piece m which extends only part way across the pipe. The length of the slit 5 maybe chosen to produce the particular power and tone quality of the pipe desired. Moreover, the width of the slit b ma .be adjusted through the piece at in or er to provide the precise narrowness of slit required to reduce the quantity of the air delivered by the desired amount. Of course,.the slit 6 may be cutin the cap itself without providing any adjustable as a convenient means of constructing an adjusting the slit. Where said piece on is'em loyed and has been adjusted in the desire position, it will generally be permanently secured to the cap in some suitablem'anner as, for instance, bygluing. I r

It will be understood, from a reading of my prior Letters Patent referred to above, that the two slits receive their wind supply independently and that means are provided to cut off the wind supply of either at will.

For instance, in the present case, the space 0 underneath the block communicates with the wind chest 0 through its foot 9, while the passage 1) communicates with the wind chest through a second foot f or some other suitable means; and sliders or stops it and i are provided to control eacha complete set of feet, that is, one slider for'all the feet 9,

and one for all the feet f. It will be understood, of course, that the sliders h and 2' are independently connected with stop-handles at the keyboard or console, in the usual manner. Thus it will be seen that by closing the slider 2' and opening the slider 72, all the pipes in the stop will speak their normal tone, while by opening the slider i and closing the slider h, their tone will be changed in quality, and reduced in power. And these changes are produced with absolutely no change in pitch. The slit 5 will 'enerally be adjusted and then fixed, in the first instance, to determine the thickness of the sheet of air delivered therethrough; in addition to this primary adjustment, it is desirable to provide some means for regulating the capacity of the air passage 6 which connects the source of wind supply with the slit .71 Such regulating means may consist, for instance, of a plug, as 6 provided in each cap and extending into the air passage 7). Being accessible from the outside, these plugs may easilybe moved so as to restrict more or less the corresponding passages. It is obvious that this regulating of the capacities of theair passages may be efi'ected by any of the methods in common use and well known to organ builders.

It will be understood that other constructions of cap may be provided to embody a slit and an air passage, and be substituted for the old plain caps in organ pipes, and also that two or more of these additional slits maybe provided in the cap to produce the result described in my aforesaid Letters Patent; and further that any of said additional slits may be sub-divided to control say one-third or two-thirds or some other fraction of the slit as shown with respect to the original slit in my aforesaid Letters Patent; but all such caps are considered to be within the scope of the present invention. These. caps make it possible easily to apply the present invention, as well as that set forth in my prior Letters Patent aforesaid, to existing wooden pipes; for the only change required is to substitute the new caps for the old ones and connect their air passages with the wind chest. Finally, it is understood, of course, that the invention is not limited to application in wooden organ pipes.

I claim as my invention:

1. An organ pipe having a mouth, and

sheetsof air across said mouth, in combination with a wind-chest, independent passages to deliver air from the wind-chest to the respective slits, and-means to control the delivery of air through each passage independently of that through the other passage. 3. The combination with a wind-chest, an

organ pipe, two hollow feet forming passages from the wind-chest to the pipe, and a slider for opening and closing the passage in each foot, said pipe having a mouth and being provided with two parallel slits of different length in which said passages terminate respec ively, and each of said slits being adapted to deliver a sheet of air across said mouth to cause the pipe to speak.

4. The combination of a wind-chest, an organ pipe, and means for delivering air from the chest to the pipe, said pipe having a lip, a cap and a block, the lip and cap forming a mouth for the pipe and the cap and block forming the normal slit of the pipe, the topedge of the cap being provided with a second slit and both of said slits communicating with the aforesaid means for delivering air vfrom the chest to the pipe, and means to control the delivery of said air through one slit independently of that through the other slit.

5. An organ pipe having a mouth, and provided with a slit to deliver a sheet of air across said mouth and a second slit parallel to the first slit but of a different length and also adapted to deliver a sheet of air across said mouth, in-combination with a windchest, and means to deliver air from the wind-chest through one slit independently of that through the other slit.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

- ROBERT Y. BARROWS;

Witnesses:

LUcIUs E. VARNEY, JOHN W. THoMrsoN.

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