US1309789A - Planoohaph co - Google Patents

Description

]. VELEHRADSKY.

GEARING FOR NOTE SHEET PROPELLING.

APPLICATION FILED OCT. 1.1911.

'1 09,789. Pdtented July 15, 1919.

2 SHEETS-SHEET I.

TRACKER BOX n Hart? A0770 TEMPO LEVEF? #5) BED THE COLUMBIA PLANOGRAPH 00.. WASHING TON, b. C-

1. VELEHRADSKY.

GEARING FOR NOTE SHEET PROPELLING. APPLICATION FILED 012121.191].

Patented July 15, 1919.

Z SHEETS-SHEET 2.

D D U a U DD UNITED STATES PATENT OFFICE.

JOSEPH VELEI-IRADSKY, OF NEW YORK, N. Y., ASS IGNOR TO AUTOPIANO COMPANY, A CORPORATION OF NEW YORK.

GEARING FOR NOTE-SHEET PROPELLIN G.

Application filed October 1, 1917.

To all whom it may concern:

Be it known that I, Josnrrr VELEHRAD- SKY, a citizen of the United States,residing at New York, in the county of New York and State of New York, have invented a new and useful Gearing for Note-Sheet Propelling, of which the following is a specification.

In musical instruments a motor is employed for note sheet propelling and the same is connected by suitable gearing to opcrate either the take-up spool for playing or the music spool for rewinding. This gearing consists of a shaft arranged parallel to the axis of the take-up spool carrying a pinion which can engage with a gear on the take-up spool, and loosely arranged on said shaft is a gear which connects by a sprocket chain to a sprocket pinion on the hub or socket which carries the music spool. This gear usually has a pin or clutch which is engaged by a pin or clutch secured to said shaft. A lever having pins engaging said clutch is connected by suitable links to the tempo lever so that by this arrangement the shaft can be slid forward and backward.

While slid forward the pinion is engaged with the gear on the take-up spool and the clutch is disengaged from the gear on the shaft, and thus the take-up spool is rotated to draw the perforated note sheet forward over the apertured tracker bar.

When the shaft is slid backward the pinion is disengaged from the gear and the clutch is engaged with the loose gear, whereby the music spool is rapidly rotated to rewind the perforated note sheet.

With this gearing it is customary to slide the shaft axially so as to cause the teeth of the pinion to engage and disengage from the teeth on the gear on the take-up spool. When the engaging action takes place the teeth do not always come in position for such engagement and sometimes repeated efforts have to be made to cause such engagement. This causes wear on the teeth of the pinion and the gear, and often leads to rattling.

To overcome this objection I provide means whereby when said shaft is moved forward the pinion is moved over and then into mesh with said gear. By this arrangement the engagement can always take place and wear is eliminated.

Referring to the accompanying two Specification of Letters Patent.

Patented July 15, 1919.

Serial No. 194,213.

sheets of drawings forming part of this application for patent,

Figure 1 is a front elevation of a note sheet propelling gearing with my invention applied thereto;

Fig. 2 is an enlarged view showing the pinion disengaged from the gear;

Fig. 3 is a similar view illustrating the position of the pinion on the first part of its forward movement;

Fig. 4 is a similar view illustrating the pinion in complete engagement with the gear, and F Fig. 5 is an end view on the line 5-5 of Referring to the drawings and in detail,

10 designates the sliding shaft previously.

referred to, which has on its end a pinion 11 for engagement with the gear 12 on the take-up spool. Said shaft 10 is provided with a collar G. A cam A is secured to the side of the spool box below the shaft, and a stop or retaining-piece B is secured to the side of the spool box above the shaft.

The socket or bearing for the shaft in the side of the spool box is made elongated so that the end of the shaft can move up and down vertically therein. In operation, when the shaft is slid forward to cause the pinion to engage with the gear the collar C rides up over the cam, as shown in Fig. 3, which thus causes the pinion to move u over the gear with the teeth disengage The continued forward movement of the shaft allows the collar G to drop down in front of the cam A, whereby the pinion will engage sidewise with the gear. The stop or retaining-piece B bears on the collar 0 when the shaft is in its forward position and thus holds the shaft down in its'bearing in the side of the spool box and holds the pinion nicely in mesh with the gear. By this arrangement an easy and nlce engagement of the pinion with the gear is provided for.

Details and arrangements herein shown and described may be greatly varied by a skilled mechanic without departing from the scope of my invention as expressed in the claims.

Having thus fully described my invention, what I claim and desire to secure by Letters Patent is 1. In gearing for note sheet propelling, the combination of a take-up spool, a gear thereon, a shaft arranged parallel to the axis of the take-up spool, a pinion carried thereby, means for moving the shaft axially, and means for causing the pinion to move over and then into mesh with said gear.

2. In gearing for note sheet propelling, the combination of a take-up spool, a gear thereon, a shaft arranged parallel to the axis of the take-up spool, a pinion carried thereby, means for moving the shaft axially, and cam mechanism for causing the pinion to move over and into mesh with said gear. I 1

3. In gearing for note sheet propelling, the combination of the gear on the take-up spool, a shaft, a pinion carried thereby, means for moving the shaft to engage the pinion with and from said gear, a collar on said shaft, and a cam engaged by said collar to cause the pinion to move over and then into mesh with said gear.

4. In gearing for note sheet propelling, the combination of the gear on the take-up spool, a shaft, a pinion carried thereby, means for moving the shaft to engage the pinion with and from said gear, a collar on said shaft, a cam engaged by said collar to cause the pinion to move over and then into mesh with said gear, and a stop for holding the pinion in mesh with said gear when engaged therewith.

In testimony whereof I have hereunto affixed my signature.

JOSEPH VELEHRADSKY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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