Патент USA US2134192код для вставки
Oct. 259 was. 2,134,192’ L. c. KAULKNG PIANO Filed Aug. 4, 193'? Awa k ITufen or w 27%4 % h. [mm a“ R. 11129 m a 2,134,192 Patented Oct. 25, 1938 UNITED STATES PATENT OFFICE 2,134,192 PIANO ‘Louis C. Kaullng, Kew Gardens, N. Y. Application August 4, 193?, Serial Nou 157,340 ' 2 Claim. (Cl. 811-197) This invention is directed to new and useful improvements in low height upright pianos and more particularly to such'types of pianos having an overall height of about thirty-six inches. 5 The present trend of upright piano demand has been for such pianos of much lower height than those heretofore manufactured so as to reduce the room space necessary for such pianos. In reducing the height of the pianos the length 1.0 of the strings and the height or” the sounding hoard must he reduced and the general mecha nism of the piano which is operated by the keys must be lowered. The shortening oi‘ the strings and the reduction in size of the sounding board sacri?ces quality in the resultant tone. Heretofore, in the construction of such pianos the piano plate, which is cast as a unit, ex“ and repetition is sacri?ced through the cable or wire connections. In upright pianos of usual height there is a direct blow action between the inner end of the piano key and the lever that sets in motion the various springs and levers to move the damper from the string, cause the hammer to strike the string, and at once leave the string by means of the escapement mechanism. The primary object of this invention. is to pro vicle an upright plane of low height in which the length of the piano strings is materially greater than those or": pianos of similar height ‘and in which the direct blow action is main tainecl thus obtaining superior tone quality and. ?exibility operation. A further object is to provide such a clan-o tends vertically in the piano and is provided at that will stay in. time longer than present planes its upper end with the tuning pins to which the strings of the piano are secured. ‘of similar size. A still further object is to provide such a piano Es.Q with a cast piano plate adapted to receive the The playing portion or the piano strings ere tends from the hitch-pins at the hottom of the plate to the iii-bar, spaced somewhat below the upper end of the plate. From the vuhar to the so tuning pin is the non-playing portion of the piano strings which varies from. three to iive inches in length. In reducing the general height or" the piano it is apparent that the keyboard cannot be low~ ‘so cred proportionately. it must ‘be maintained in a more or less standard plane to facilitate the operation or playing of the piano. ‘ Because of this fact the modern low upright pianos have been constructed with. what is known 85 in the trade as “drop action”. Plmis means that the mechanism that is actuated by pressure on the piano keys. to produce the musical tones has been lowered to extend below the keyboard to fit into the reduced height of the piano casing. In dropping this mechanism below the plane 4% of the keyboard to effect the so-called “drop ac tion”. the keys have been operably connected with the lower piano mechanism by means of wires or small cables. Thus when a piano key 45 is depressed to strike a note the inner end of playing portion of the piano strings in vertical position and. the non-playing portions sube stantial horizontal position and secured to turn ing pins vertically positioned in the upper por= 25 tion of the plate. ‘Another object is to provide such a plate have ing a log cast integrally with to support the hey hottorn to prevent its sagging. Still further objects and advantages will be apparent from the following detailed descrip tion. In the drawing the ?gure shows a vertical cross-section View partially broken away or the working mechanism of a piano constructed. in 35 accordance with this invention. In detail, 0 indicates a cast metal piano plate comprising a vertical portion 2 that extends sub stantially the height of the piano and a hori zontally extending portion 3. Positioned through the horizontal portion 3 of the piano plate is a tuning pin 4 that extends into the tuning pin block: Ila that is ?tted immediately under the horizontal portion. Pressure her 5 and heads 6 and ‘l are secured to the top portion 3. The 45 V-bar 8 extends across the upper portion or the the key is lifted and by means of a wire con heating the inner end of the key with a lever, vertical surface of- the plate adjacent the hori sontal portion. Considerably below the V-bar positioned below the keyboard the general piano and cast integrally with the plate is a key bottom supporting lug 9. The hammer operating mech anism is shown generally and comprises the ham 60 mechanism is actuated through its various levers and springs to cause the hammer to strike the string and produce the desired note. 7 Aside from the fact that the tone quality is sacri?ced because of the shortened piano strings, 65 this “drop action” is undesirable because power mer HI, damper II, and the various levers and springs which effect the operation of the ham mer and its associated members. Inasmuch as the operating mechanism affords 56 2 2,134,192 no part of this invention, further detailed de scription of it is not made. The key bottom I2 is shown supported at its playing portions greater friction is produced be inner end by the lug 8 and fulcrumed on the key In this manner the piano maintains its tune much longer than if there was a direct pull on the pins. I claim: bottom i2 is the key IS, the inner end ll of which extends beneath and is in direct contact with lever l5, so that upon depression of the outer end of key I: the usual levers and springs are set in motion to move the damper ll away from the 10 string, cause the hammer to strike the string and release. The string i6 is shown extending vertically from hitch-pin l'l over bridge l8 par allel to the piano plate I over the V-bar 8 and horizontally over the beads 6 and ‘I underneath 15 the pressure bar 5 and secured to the tuning pin 4. The sounding board I 9 extends parallel to the vertical portion 2 of the plate and supports the bridge l8 that extends through the plate i. Thus it will be clearly seen that only the playing por tions of the strings are carried by the vertical portion of the plate while the non-playing por tions are led over the top parallel to the hori zontal portion of the plate thus diminishing the height of the plate. In this manner three to live inches in vertical height of the piano can be saved without shortening the strings and with out necessitating the installation of the so-called “drop action” mechanism. Thus it can be clearly seen that by utilizing this 30 invention a thirty-six inch piano can be produced that will have the tone and playing qualities of a thirty-nine or forty inch piano 0! the old type. Thus is obtained a popular small size piano with out the undesirable characteristics of smaller 35 sounding board, shortened strings and "drop action”. Furthermore by placing the non-playing por tions oi the piano strings at right angles to the tween the strings, the V-bar and the beads thus reducing the strain and pull on the tuning pins. 1. An upright piano oi.’ about three feet in height comprising a piano plate having a ver tical portion extending substantially the height of the piano, a horizontal portion extending from the upper end of the vertical portion, a grand piano tuning pin block supported against the under surface 0! said horizontal portion, tuning pins extending through said horizontal portion and into the pin block, a string supporting V-bar positioned on the vertical portion of the plate in substantially the same plane as the horizontal portion, and strings extending substantially the length of the vertical portion over the V-bar and closely adjacent the horizontal portion to the tun 20 ing pins. 2. An upright piano of about three feet in height comprising a cast metal piano plate hav ing a vertical portion extending substantially the height of the piano, a horizontal portion extend 25 ing from the upper end of the vertical portion, a grand piano tuning pin block secured to the under surface of said horizontal portion, tuning pins extending through said horizontal portion and into the pin block, a string supporting V-bar 30 positioned on the vertical portion of the plate in substantially the same plane as the horizontal portion and strings extending substantially the length of the vertical portion over the V-bar and closely adjacent the horizontal portion to the tun 35 ing pins. LOUIS C. KAULING.