US296308A

US296308A - bettman

Info

Publication number: US296308A
Authority: US
Publication date: 1884-04-08
Anticipated expiration: 1901-04-08

Description

(No Model.)

J. M. BETTMAN.

PEDAL ATTACHMENT FOB PIANOS.

Patented Apr. 8, 1884.

.I I v Y m d M u v w L Q u 2 A 001 E 7 0. a I M 6 w m 9 n 9 fifl/ I L 0 N @nd N, PETERS. Pholo-Lilhngraphcn Washingml. Dv C.

UNITED Srarns PATENT @rrrer.

JOHN M. BETTMAN, OF NORTH PLAINFIELD, NEWV JERSEY.

PEDAL ATTACHMENT FOR PIANOS.

SPECIFICATION forming part of Letters Patent No. 296,308, dated April 8, 1884.

Application filed June 25,1883. (No model.)

The object of this invention is to have the piano-forte pedals adapted for operation by children players as well as by adults.

My invention relates to the combination, with the ordinary piano-forte pedal, of an aux-v iliary pedal,which is attached and constructed tobe put in or out of operation and made ad- I 5 justable vertically, so as to suit children as well as adults. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 represents a crosssection of a piano-forte and its pedals with my improvement attached. Fig. 2 is a detached top view of the pedals with my improvement, the lyre of the piano being shown horizontally bisected. Fig. 3 is a side view of a portion of the attachment to the pedal. Fig. 4 is a horizontal section of the same.

A represents the piano-forte withthe ordinary lyre, B, and the pedal-levers O O for operating the damper by means of lifter-rods D D.

To the lyre B is permanently secured, for each pedal-lever O, a vertical square rod, E. and upon each of the rods E is attached a horizontal treadle, F, which has two vertical guide-hubs, G G, through which rod E passes loosely. Between said hubs G is arranged a horizontal collar, H, having a central square opening, I, fitted to slide loosely over the rod E, and furnished with a proper set-screw, J to fasten the collar upon the said rod E. Said hubs G G have round openings large enough to allow them to turn around the rod E 5 but on the side of the treadle F is arranged ahorizontal spring-bolt, K, guided in the staples L L, and between said staples the bolt is made with a shoulder or collar, N, and is furnished with a spiral spring over it to press the bolt toward the collar H, which has two notches or cavities, hand h, in its periphery, and a quarter-turn from one another, to receive the end of the spring-bolt K, and thereby lock said treadle to said collar H in either of two positions-that is, either over and to operate upon the pedal-lever 0 when the bolt is in cavity h, or turned aside away from it when the bolt is in cavity h, and so that the-pedal-lever C may be operated independently, as shown in Figs. 2, 3, and 4. Said treadle has on its outer and top side a cavity, M, to admit the heel of the shoe of the player and hold it from sliding.

To the side'of the treadle oppositeto that on which the spring-bolt is attached is pivoted a small sub-pedal, O,which passes in through a slot, P, made in the top plate of said treadle F. Its outer loose end has a lateral top plate over the treadle, upon which the forward part of the foot or shoe of the'player presses; and on the side of the pedal 0 is arranged along vertical screw or adjustable rod, 0, passing through a nut or sleeve, Q, and down to the pedal-lever O. Said nut or sleeve is attached to the pedal 0 by a pivot or swivel, u, and the bottom end of the rod 0 is sunk into the top side of the pedal-lever O. The top end of the vertical square rod E is attached to a lateral plate, R, by means of the screw S, and the plate Bis secured to the front side of the lyre.

The bottom end of the rod E is held to the plate T, which is and placed over the pedal-levers O O, and the a bottom ends of, the rods 0 O are adjusted properly in the respective cavities sunk in the top side of the pedal-levers for them. By means of the screws or rods 0 O the treadles F F are properly raised and adjusted to the players heels to locate them in the cavities M M. \Vith the set-screws J J the collars H H are secured at the proper height on the rods EE, so as to firmly hold the treadles from sliding down. By means of the spring-bolts K K, properly engaged in the cavities h h, said treadles are also held from turning on the rods E E. By the pressure of the fore part of the player s foot on the pedal 0, the rod 0 and the corresponding pedal-lever O are readily depressed as required.

To have the piano-forte pedal changed for the use of adults, each of. the treadles F F is readily turned to the side of the lyre away from the pedal-levers G O, by simply withdrawing the spring-bolts K from the cavities h h, and

by allowing the SILIUO to engage in the cavities the pedal 0 with the pedals of the piano, as 10 h h, the treadles are then held properly in set forth. the latter position, as shown in Fig. 2. In witness whereof I have hereunto set my hat I claim as my invention, and desire to hand this 3d day of May, 1883. 5 secure by Letters Patent, is A e L r In it pianopedal attachment, the foot-plate Jon} BDFTMA Rhaving hubs G, pedal 0, and bolt K, in combination with the collar II on rod 13, having cavities h 70, and the rod 0, for connecting In presence of- BoEKLnN, S. TOWNSEND.