US720776A - Music-stool. - Google Patents

Description

No. 720,776. PATENTED FEB. 1'7, 1903.

F. R. BENNETT.

MUSIC STOOL.

APPLIUA'MON FILED JAN. s, 1902.

UNITED STATES PATENT OEETCE.

FREDRICK RIOKARDS BENNETT, OF LONDON, ENGLAND, ASSIGNOR OF ONE- HALE TO HERBERT MELCHOR GREENWOOD, OF LONDON, ENGLAND.

Music-stool..

SPECIFICATION forming partof Letters Patent No. 720,776, dated February 17, 1903. Application led January 8,1902. Serial No. 88,869. (No model.)

To @ZZ whom t muy concern:

Be it known that I, Fnnnnrcx Ricxnnns BENNETT, a subject of His Majesty the King of Great Britain and Ireland, residing at 90 Chapter road, Willesden Green, London, England, have invented certain new and useful Improvements in Music-Stools Applicable to other Seats Requiring Vertical Adjustment; and I do hereby declare the following to be a 1o full, clear, and exact description of the invention, such as will enable others skilled inthe art to which it appertains to make and use the same. Y

This 'invention relates principally to improvements in the construction and arrangement of what are commonly known as adjustable box-seat music-stools, and has for its object to eect simplicity and economy of construction combined with ease and rapidity zo of adjustment.

The invention may be applied with advantage to other seats requiring vertical adjustment, as to driving-seats, for example.

According to my invention themusic-stool comprises an outer frame mounted upon suitable legs or supports, within which is fitted, so as tobe freely adjustable vertically therein, a box or inner frame, which may be used as a receptacle for music and the like and 3o whereof the lid or top constitutes the seat proper. At each end of the adjustable box or inner frame iiaps are hinged and normally pressed outward by springs, which cause catch devices provided to interlock,and thereby support the box or inner frame atthe desired elevation. The release or' the said catch devices for lowering the seat is effected by small levers or handles adapted to press inward the hinged iiaps and conveniently ar- 40 ranged to be operated by the sitter. Adjustment of the seat is effected by directly raising or lowering the box or inner frame by means of handles provided thereto, slow and comparatively complicated and expensive screw adjustments being dispensed with. The grips of the releasing levers or handles are preferably arranged in close proximity to the adjusting-handles, so that they may be operated by clasping or pressing them against Adjustment of the seat may thus 5o the latter.

be effected in aninstant and with the greatest ease. Parallelism between the outer frame and the adjustable box or inner frame is at all times preserved by a compound or connected lever device comprising a pair of levers, each moving the other in unison, which connect said inner and outer frames and which lie extended in about a straight line beneath the box or inner frame when the seat is fully lowered, so that but little extra space oo is required for their accommodation. A gradual and noiseless fall of the box or inner frame may be insured by the provision of small bellows connected with and adapted to be operated by the compound lever device aforesaid, so as to be expanded when the seat is raised and compressed as it descends. These bellows would be provided with nonreturn air-inlet valves and also with air-outlet apertures, the latter so proportioned as to `7o insure the gradual and noiseless fall of the box or inner frame when released from its supporting-catches. .The said bellows are,

however, not absolutely essential to myinventiou and may be dispensed with, if desired. v7 5 In order that my invention may be fully understood, I will now fully describe the same and the manner in which it is to be performed, having reference to the annexed drawings, in which similar letters refer to corresponding 8o parts in all the gures, and wherein- Figure l is a perspective view showing the general external appearance of an adjustable box-seat music-stool constructed in accordance with my invention. Fig. 2 shows the 85 working parts, the outer frame being in section. Fig. 3 is a similar View to Fig. 2, but with the addition of bellows for the purpose above mentioned. Fig. 4. is a cross-section online cc oo, Fig. 2; and Fig. 5 is an end view 9o of vthe adjustable box or inner frame detached.

o, is the outer frame of the seat, which may be mounted on suitable legs or other supporting devices, and?) is the box or inner frame adjustable vertically within a. The lid or cover c of the box or inner frame, which constitutes the seat proper, is only shown in Fig. 1. At either end of the box or inner frame Zi flaps d are hinged at e, these flaps los being normally pressed outward by helical or other springs f, so as to cause the lower edges of said flaps, which are suitably shaped, to act as pawls to engage with the teeth of the racks g, carried by the outer frame CZ. The adjustable box or inner frame Z9 is thus automatically supported at the height to which it has been adjusted. The release ofthe catch devices in order to lower the seat is effected by the cranked releasing-levers Zt, pivoted to the overhanging flange Z1' of the box or inner frame at z'. The ends of the vertical arms of these levers bear on the iiaps CZ, and their horizontal arms or hand-grips extend over the adjusting-handles Zo, by which the seat is raised and lowered and which also project from the iiange b. Release of the supporting catch devices may thus be conveniently effected by the sitter clasping the releasing-levers Zt and adjusting-handles 7c together, which greatly facilitates adjustment. Parallelism between the outer and inner frames ct and Z9 is at all times preserved by the following compound or connected lever device, which connects said frames together.

Z Z are a pair of levers of the rst order, whereof the fulcrums or pivots m work in brackets n', secured to the bottom of the outer frame a, near the center thereof. One of said brackets n is pivoted in a support n2. The longer arms of these levers are connected with the box or inner frame Z2 on either side thereof by the links o, while the ends of their shorter arms are in juxtaposition and pivotally connected by the hinges p, so as to cause both levers to move in unison and to an equal extent.

With the arrangement above described it is obvious that the box or inner frame b must rise and fall equally at both ends and that parallelism between the same and the outer frame a will be always preserved, so that jamming of the sliding parts is impossible. It will be noted that the levers Z take no active part'in the raising and lowering of the seat and that when the latter is in its lowest position they will both lie extended in about a straight line beneath the inner frame b, and thus require but little extra space for their accommodation.

q q, Fig. 3, are small bellows disposed between the longer arms of the levers Zand the outer frame a and connected therewith so as to be expanded and compressed as said longer arms rise and fall.4 Air is drawn into the said bellows throughsuitable non-return inlet-valves and is expelled through outlet-apertures, which are so proportioned as to insure the gradual and noiseless fall of the inner frame or box b when the supportingcatches thereof are released.

What I claim, anddesire to secure by Letters Patent of the United States, is-

l. In a music-stool or other seat requiring vertical adjustment, the combination of an inner frame slidable vertically within an outer frame, a compound or connected lever device connecting the inner and the outer frames whereby parallelism between the same is preserved, bellows connected with and operated by said compound or connected lever device, said bellows being expanded when the seat is raised and compressed when it descends, and catch devices for supporting the seat when elevated, substantially as described and for the purpose specified.

2. In a music-stool or other seat requiring vertical adjustment, the combination of an outer frame, an inner frame adjustable vertically therein, levers fulcrumed near the bottom of the outer frame and having their longer arms connected with the said inner frame or box and their shorter arms pivotally connected together, bellows arranged between the longer arms 0f said levers and the outer frame, and catches for holding the inner frame or box elevated, substantially as described and for the purpose specified.

3. In a music-stool or other seat requiring vertical adjustment, the combination of an outer frame, an inner frame slidable vertically therein, a compound or connected lever device connecting the inner and the outer frames for preserving parallelism between them, fiaps hinged to opposite sides of said box or inner frame and pressed outward by springs, catch devices which interlock when the flaps are pressed outward, and means conveniently arranged to be operated by the sitter for pressing in said flaps to release the catch devices, substantially as described.

4. A music-stool or other seat requiring vertical adjustment, comprising-the outer frame ct, the inner frame b slidable vertically therein, the levers Z fulcrumed near the center of the bottom of the outer frame at m, the links o connecting the longer arms of said levers with the box or inner frame b, the hinges p connecting the shorter arms of said levers, the bellows q interposed between the longer arms of the levers and the outer frame and operated by the movement of said levers, the spring-controlled iiaps (Z on the inner frame or box, the catch devices interlocked by the outward pressure of said iiaps and the means for releasing said catch devices, substantially as described.

In testimony whereof I affix my signature in the presence of two witnesses.

FREDRICK RICKARDS BENNETT Vitnesses:

S. lWIAoKELLow, A. E. ALEXANDER.

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