US1048190A - Adjustable piano-bench. - Google Patents

Description

. G. H. MARTIN.

ADJUSTABLE PIANO BENCH.

' Patented Dec. 24, 1912.

APPLICATION FILED SEPT. 7, 1911.

f Q I I Mau w I w W HII M ff H UNITED STATES PATENT OFFICE.

CHRISTIAN H. MARTIN, or. AKRON, OHIO, ASSIGNOR, BY MESNE'ASSIGNMENTS, To THE MARTIN ADJUSTABLE rIA o BEIvoII oo PAN on CLEVELAND, OHIO.

ADJ STAB E PIANO-BENCH.

Patented Dec.24,191 2.

Application filed September 7, 1911. Serial N 0. 648,237.

T all whom it may concern. I

Be it known that I, CHRISTIAN Hmvnnm SON MARTIN, a citizen of theUnited States, residing at Akron, in the county of Summit and State of Ohio, have invented new and useful Improvements in AdjustablePianm Benches, of which the following is aspecification.

This invention relates to benches or seats for use in connection with a piano or organ and the object thereof is to provide a simple, inexpensive device for the'purpose named, having an adjustable seat portion capable of being raised'from a lower horizontal position to an upper inclined position. EX- perience has shown that in playing a piano or similar instrument in the ordinary way, a comparatively low horizontal seat is required, but when a mechanical pianoplayer is/operated the best 'resultsare obtainedby using a higher and inclined seat for'sup porting the body so as to bring the weight thereof more nearly over the treadlesby which the mechanical piano player is operated. It is also desirable to have a bench or seat for a iano adjustable in o-rder to suit the indivldual preferenceof the performer andto make the seat adaptable to use with pianos having. key-boards of different heights. "It will be'seen that in the case of a bench intended to be used with a player'piano, it is' desirable to be able to adjust the's'ame quickly and easily from the lower horizon ,tal position adapted to manualplaying to the higher inclinedposition suitable for me chanical 'playing,*and vice versa, as a performer will often wish to change back and forth from one style of playing to the other at frequent intervals. Careful adjustment of elevation and inclination of the seat is less desired than ability 'to quickly and easily adjust the elevation and automatiwhen at [higher elevation. I In accordance 7 a bench in whichtheseresults are obtained;

The bench'may be raised by a single movement fromfilower to higher position, such movement automatically inclining the bench so thatit.will have the proper; inclination when raised. A single movement also suf 'fices to lower the seat, when it will automatica-lly resume its horizontal position.

This automatic raising, loweringand tilting of the seat is accomplished without dis- I placing the seat laterally from its correct posltion'upon its supports,but the seats and 'lts'supports are maintained in proper ver tical alinement at all times during such operations. I p

.In the accompanying drawings which is a transverse sectional view of the device.

shown in Fig. 1 on line X, showing the seat in its lower horizontal position; Fig. 4:, is afviewsimilar to Fig. 3, showing the seat in its upper inclined posit-ion; Figs. 4, 5, 6, 7 and 8 are enlarged details of portions of the mechanism employed in supporting and moving the seat; and, Fig. 9, isa longitudinal sectional view of a portion of the device shown in Fig. 1, on line Y thereof. Referring to-the drawings in detail the reference numerals 1, 1 denote the supporting legs of the bench, preferably connected 1 by across bar 2. Extending between the legs 1, 1 .isthe seat portion of the bench comprising a top 3 having depending therefrom side pieces 4, 4, secured to the top 3.

The side pieces 4, 4 are slightly removed i from the side edges 5 and 6 of the top to provide ledgesv orshoulders which afford hand-grasps for raising the seat from its lower position to its upper position and for raising'it sufliciently when in its upper position to release the lockingmechanism to permit it to be lowered.

;The mechanismenables both ends of the bench to be raisedsimultaneously and evenly from a lower position-to an upper position and fromthence'loweredtojits original position, and holds} and supports the seat in both positions and is as follows, attention being directed to the fact that the-mecha- 'nism at both ends of the bench is similar and hence, the description hereinafter given Willi-be confined to one end. Secured by suitable hold-fast devices 7 to the inner face comprising astrip ofinetal having an outweirdly-extending median portion 9 and nearone end'an outwardly-bulged portion loconstituting a seatandiprovided with an aperture 12 therein. The ends of the member S are preferably L-shaped and inwardly extended to be secured to the inner face of the leg 1. The member 8 is provided in its seat portion 10 with a notch 13 above the aperture 12 and also has near its opposite end a slot 14 having near one end thereof and in its lower wall a notch 15 for a purpose to be later described.

Secured to the under face of the top 8 is an L-shaped bracket 16 attached in place by hold-fast devices 17 and provided in its depending portion with a slot 18. Mounted in the aperture 12 in the seat 10 is a pin 19 constituting a pivot for a lever 20 the opposite end of which is provided with a pin 21 slidably mounted in the slot 18 in the bracket 16. Pivoted to the lever 20 by means of a pin 22 is a complementary lever 23 the lower end of which is provided with a. pin 24 slidably mounted in the slot 14 of the member-8. Secured by hold-fast devices 25 to the under face of the top 3 on the opposite side of the seat from the bracket 16 is a hinge member 26 having a pair of integral, spaced, tubular members 27. Either formed integral withthe upper end of the lever 23 or secured thereto is a transverse tubular member 28 corresponding in contour with the members 27 and adapted to be positioned between them and held in position through the medium of a pin 29 extending through the alined members and constituting a pivot for the movement of the lever 23. The notch 13 in the member 8 is provided to permit the seat to be lowered into the position shown in Fig. 3, and clear the tubular portions 27 of the hinge-member 26 and the tubular portion 28 of the lever 23.

The lengths of the arms of the levers 20 and 23 are so proportioned that when the seat is raised it is simultaneously inclined as shown in Fig. 1. In order to accomplish this result the lever arm 2122 is made longer than the lever arm 2229. The lever arms must however be so proportioned that the seat 3 will not be thrown forward when it is raised and inclined, but its edges must be maintainedvin alinement with the vertical edges of the supporting members 1. While any relative proportioning of the lever arms which will produce this result is within the scope of my invention, I prefer to make the lever arms 22'19 and 2224: of approximately the same length, the lever arm 2229 being not much different in length from these two arms, while the fourth arm 21-22 is made sufficiently long to produce the desired inclination of the seat when raised.

WVhen it is desired to raise the seat from the lower horizontal position asshownin Fig. 3' to an upper inclined position. as shown in Fig; 4:, the user places'Ihis tinger tips under the ledge at the left of the top, the side designated by the reference numeral 5, and as he raises this side the pivoted ends of the levers 20 and 23 are separated and being pivoted together at 22 a simultaneous and greater separation of the opposite ends of the levers takes place due to the fact that the pivot 22 is not centrally positioned, causing thereby a tilting or inclination of the top 3. As soon as the seat has been elevated a suflicient distance the pin 24 in the lower end of the lever 23 drops automatically into the notch 15 which communicates with the slot 14. The engagement of the pin 24 with the notch 15 prevents any movement of the seat and it serves to effectually hold the latter in its inclined position. Then it is desired to lower the bench from its upper inclined position as shown in Fig. 4, the operator slightly raises the upper side of the bench designated by the reference numeral 6 which operation raises the lower movable end of the lever 23 sufficiently to move the pin 24: out of the notch 15 and then by releasing the top it lowers itself to its normal. horizontal position. It may be pointed out to make this last operation more easily understood that the slight raising of the side 6 of the seat simultaneously raises the upper end of the lever 20, in doing which the lever 20 is swung on its pivot, the pin 19. This movement of the lever 20 through the pin 22 also swings the lever 23 slightly, and as one end thereof is pivoted on the pin 29, the opposite end carrying the pin 21 must yield sufficiently to withdraw the pin 2 1 from the notch 15.

Vhile I have shown in the accompanying drawings and described in detail in the foregoing specification a preferred embodiment of my invention, it is to be understood that my. invention is not limited to the precise structure set forth, but is capable of modification in many ways. I do not desire to be limited to the details of the structure shown and described any further than as specified in certain of the more limited claims hereunto appended.

I claim:

1. A piano bench comprising a support and an adjustable seat and extensible lever mechanism for supporting said seat upon said support, said mechanism when collapsed supporting said seat in a lower horizontal position and when extended auto said seat in an upper inclined position.

2. A piano bench comprising a seat, supporting legs, a pair of levers pivotally connectedtogether, one of said leyers having its arms projecting beyond the ends of the arms of the other of said levers, and means -;:for;eonneet1ng said levers. to said seat and 7 -one of said legs whereby the seat can be shifted from a lower horizontal position to an upper inclined position.

3. A piano bench comprising a support, a seat, and means for supportlng said seat upon said support comprising a pair of crossed levers pivoted at their point of intersection, one end of one of said levers being pivoted to said support, the other end of said lever being pivotally and slidably connected with said seat, an end of the second lever being pivotally and slidably connected with automatically tilted.

tersection of the twolevers and the pivotal connection of said arm with said seat, whereby, when the seat is raised, it will be g 41. A piano bench comprising a seat, a pair of supporting legs, a slotted bar secured to one of said legs, a slotted member depending from the seat, a short and a long lever, means for pivotally connecting said levers together,means for slidably connect ing said long lever to said member, means for pivotally connecting said long lever to said bar, means for pivotally connecting. said short lever to said seat, and means for slidably connecting said short lever to said bar, the connections between said levers and the seat and bar providing means for'shiftw ing the seat from a lower-horizontal tion to an upper inclined position.

5. A piano, bench comprising a seat, legs and a lever, mechanism embodying a pair of levers pivoted together ataspoint removed from the longitudinal central point posi of one of said levers, said lever mechanism connected with the seat and one of the legs for moving the seat from alower horizontal position to an upper inclined position.

6. A piano bench comprising a seat, a pair of supporting legs located one at each end of said seat, a slotted bar secured at its ends to the inside of one of said legs and lying parallel with the surface thereof but spaced therefrom, the slot in the bar being located near one end thereof and having a horizontal portion and a notch near one end of such portion, a member secured'to the underside of the seat above the slottedportion of the bar, said member having a longitudinal slot therein, and a pair of crossed levers pivoted together, corresponding ends of said levers being pivoted to the seat and to the slotted bar, respectively, the other end of the lever pivoted to the slotted bar having a, pivotal and sliding connection with the slotted member secured to the seat, the other end of the lever pivoted to the seat carrying a portion sliding in the slot in said slotted bar and adapted to enter the notch therein, the arm of the first lever between the point of intersection of the levers and the point of connection with the slotted member secured to the seat being longer than the arm of the second lever between the point of intersection of the levers and the slot in the bar, whereby when the lever mechanism is extended to support the seat in raised position, the seat will be automatically inclined.

Intestimony whereof I have hereunto set myhand in presence of two subscribing wit- ,HRISTIAN MARTIN.

, Copies of thispatent may be obtained for five cents each, byaddressi ng the Commissioner of Patents.

Washington, D. G.

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