Патент USA US2129247код для вставки
*Sept 6, 1938. F_ STUCHLY 2,129,247 BELLOWS LOCK FOR ACCORDIONS Filed NOV. 19, 1936 _Fg J. INVENTOR @d 5kg/ay Patented Sept. 6, 1938 2,129,247 UNITED STATES PATENT OFFICE 2,129,247 BELLOWS LOCK FOR ACCORDIONS Fred Stuchly, East Pittsburgh, Pa. Application November 19, 1936, Serial No. 111,634 5 Claims. (Cl. 84-376) This invention relates to accordions and par ticularly to a locking device for the bellows. The primary object of my invention is to pro vide a simple and inexpesive locking device for 5 the bellows that shall be disposed entirely with in the accordion, and that shall be to some extent automatic in its operation, and that shall be controllable under certain conditions to opening position or to closed position by a slight compres sion of the bellows. The locking device embodying my invention consists brielly of a pivoted and weighted latch ing finger attached to the frame at one end of the bellows, and a cooperating, receiving, and 15 clamping post supported on and secured to the frame at the other end of the bellows. When the accordion is in horizontal resting 2 position, the weighted iinger is biased by gravity _to a, position where it will engage the clamp to latch the finger and the clamp together. When the accordion is rotated into playing position, the weighted finger is biased by gravity to a position out of engagement with the clamping element, thereby permitting the bellows to be eX 25 panded and contracted without any restraint by the lock elements. 'I'he clamping element of the lock consists of two spring biased latching elements that are 30 elements thereof; Figure 6 is an elevational view showing the con struction of the supporting post and pivot bracket for the latching elements; and Figure '7 is a side elevational view of the locking device of Figure 5, and illustrates the manner in which the locking elements engage and disen 10 gage under diiîerent conditions. As shown in Figures 1, 2, and 3, an accordion I0 consists briefly of an upper frame Il for one set of control keys I2, a lower frame I3 for sup porting a similar set of control keys or bars I4, a centrally disposed bellows l5 and several sets of 15 reed supporting blocks I6. During the playing of the accordion, the bel lows l5 is expanded and contracted in order to force the air through passages controlled by the keys or stops l2 in order to vibrate the associated 20 reeds, When the accordion is at rest and is to be car ried, it is desired that the bellows be compressed to its maximum `degree and held in such com pressed position, in order to prevent undesirable 25 normally positioned to provide a recess for re movement between the various parts of the ac cordion, The practice heretofore has been to join the two frames at the ends of the bellows by a short strap of such limited length as to require ceiving the finger and holding it in latched posi the bellows to be tightly compressed before the 30 tion. 'Thus the ñnger may be pressed downward between the ends of the cooperating latch ele ments into the recess, or it may be moved to enter the recess from the side of the latching ele 35 ments. Thus the bellows may be compressed and the lock permitted to function automatically in response to gravity to lock the bellows in corn pressed position, or the finger may be pressed to locking position with respect to the latching ele 40 ments by external pressure upon the bellows, that presses the bellows to the maximum compressed position. I have illustrated one form of the locking de vice made in accordance with the principles of 45 my invention, as shown in the accompanying drawing, in which Figure 1 is a plan View of an accordion with the top frame removed to expose the space within the bellows; 50 Figure 5 is an elevational View of the locking device illustrating the construction of the Various » Figure 2 is a side elevational view of the ac cordion with parts broken away through the bel lows and the reed bars to expose the locking device for the bellows; Figure 3 is an end elevational view of the ac 55 cordion of Figure 2, with the end wall of the bellows broken away to show the location of the locking device; Figure 4 is an enlarged View of a portion of the accordion in Figure 3, showing the disposition of 60 the locking device; strap could be moved to locking position on a suitable post or pin extending from the side wall of the frame. The disadvantage of such straps has been that they are unsightly and are in the way of the player while he is manipulating the 35 accordion bellows. The purpose of the present locking device is to eliminate the use of such external locking straps and to provide greater freedom to the 40 player of the accordion. For that purpose I provide a locking device 20, consisting generally of two elements, namely a latching ñnger 2l and a cooperating detent 22 for receiving the latching ñnger 2l. The ñnger 2l is connected to an arm 23 that 45 is mounted upon a, tubular element 24, that is secured to a rod 25 pivotally supported at both ends in stationary bearings 26 and 21. The linger 2| is provided with a disc-shaped weight 28, angu larly offset from the connecting arm 23 in order 50 to enable the force of gravity acting upon the weight 28 to impose a rotating or turning move ment to the arm 23, and consequently to the ñnger 2|, in order to bias the linger to engage ment with or out of engagement from the detent 55 22. The movement of the ñnger 2l is further controlled to limit its movement to either of two terminal positions, by two limiting stop arms 29 and 30 that are secured to the rotatable rod or shaft 25. The arms 29 and 30 are so positioned as 60 2 2,129,247 to engage a part of the frame 3| at the associated end of the bellows. 'I’he detent 22 consists principally of two op positely positioned latch elements 33 and 34 that are pivotally mounted at their lower ends on pivot pins 35 and 36, supported on a plate rest ing as a head piece on the supporting and an choring post 39. The two pivoted latching ele ments 33 and 34 are biased to engaging posi tion by a substantially U-shaped spring 40, the lower end of which is anchored on the post 39 and reinforced and encircled by a compression strap 4|. The upper ends of the spring 40 are secured to the side edges of the pivoted latching elements 33 and 34 respectively. The inner edges of the latching elements 33 and 34 are similarly recessed to provide an open ing 43 having a relatively straight and continu ous detent surface 44 against which the latching 20 finger 2| may rest. The upper ends of the piv oted latching elements 33 and 34 are provided with converging inclined surfaces 45 and 4E forming a V-shaped notch for guiding and posi tioning the ñnger 2| under certain conditions, 25 when the finger is to be moved to its latching position downwardly and between the two piv oted latching elements 33 and 34, instead of from the side. A stop pin 4l' is provided on the head piece 31 to hold the pivoted latching elements 30 33 and 34 exactly vertical in their closed posi tions, against any unbalance of the spring arms. When the accordion is at rest, it will occupy a That vertical is the position position as shown it occupies in Figures when carried 2 and in its usual carrying case. In that position of the accordion, the weight on the finger 2i tends to rotate the finger into locking position with re spect to the detent elements, as shown in solid line in Figure 7. If the bellows is compressed .40 when the accordion is placed in vertical posi tion, the weight will move in response to gravity to force the finger into the position shown in Figure 7. If, however, the bellows is expanded when the accordion is moved to vertical position, 45 the finger 2| will be moved by the weight 23 to a position similar to that in solid line in Figure 7, but above the notch at the ends of the pivot co operating elements 33 and 34. If the bellows is now compressed, the finger 2| will be forced to 50 the bottom of the V-shaped notch, which will then open and separate the pivoted latching ele ments 33 3d against the biasing action of the spring 4B until the finger 2| is moved into the recess 43 between the latching elements. There 55 upon, the latching elements will move together and the ringer 2l will rest `against the inner sur face 44 when pressure upon the bellows is re leased. The bellows will now be held in com pressed condition by the locking device, When the accordion is to be played, the bellows 60 must be unlocked. 'I‘he accordion, when played, is held in such position that the weight 28 is under the latching element 22 of the locking de vice, so that slight compression of the bellows will release the latching :linger 22 and permit the weight 28 to move the ñnger out of engagement with the latching member 22, to the position shown dotted in Figure '7. The accordion may then be played and the bellows expanded and contracted without interference from the locking 70 device. By means of a construction as shown and the disposition of the locking device within the bel lows, the unsightly straps heretofore used to hold the bellows compressed are obviated, and the interference from such straps likewise avoided. My invention is not limited to any specific de tails of construction that are illustrated, since details may be modiñed without departing from the spirit and scope of the invention, as set forth in the appended claims. I claim as my invention: l. The combination with a bellows secured at l0 each end to a frame, of a pivotally mounted latching iinger on the frame at one end of the bellows, a weight element eccentrically mounted on the finger to move the finger to either' of two positions in response to the force of gravity, and a detent for the iinger, said detent consisting of two pivoted levers individually notched to serve as triggers or catches for the iinger, 4and oppos ingly positioned to jointly restrain the latching finger, and a biasing spring for urging the pivoted 20 levers together. 2. A combination as in claim l, in which the pivoted levers are tapered at their ends to consti tute a V-shaped notch into which the latching finger may be guided and pressed to separate the levers against the force of the biasing spring, to permit the iinger to pass between the levers to the space formed by the notches of the levers. 3. A lock for an accordion provided with a bellows secured at each end to a frame, said lock , comprising a pivotally mounted latching finger on the frame at one end of the bellows, and a hasp or detent on the other frame to receive the latching finger, and weight means entirely en closed within the bellows and frame and asso ciated with the finger and operative by gravity 13.5 to release said iinger from its detent when the bellows is held in normal playing position, and momentarily initially compressed. 4. A locking device for a collapsible container provided with a bellows secured at each end to a frame member, said device comprising a latch ing linger' to be pivotally secured to one frame, and a detent to be secured to the other frame, said detent comprising two relatively iiat pivoted elements and a spring for biasing the two cle ments to edge to edge engagement, where the ends will form a V-notch into which the latch ing iinger may be pressed to separate the pivoted elements of the detent, those two pivoted ele ments being notched on an edge behind the end to provide a joint recess or seat into which the iinger will move and seat itself against casual displacement. 5. A locking device for a collapsible container provided with a bellows secured at each end to a frame member, said device comprising a latch ing finger to be pivotally secured to one frame, and a detent to be secured to the other frame, said detent comprising two relatively flat pivoted elements and a spring for biasing the two ele ments to edge to edge engagement, where the ends will form a V-notch into which the latch ing ñnger may be pressed to separate the pivoted elements of the detent, those two pivoted ele 65 ments being notched on an edge behind the end ` to provide a joint recess or seat into which the ñnger will move and seat itself against casual displacement, and a weight on the latching finger mounted to bias it to disengaging position when 70 the bellows is held in playing position. FREDy s'rUcHLY.