вход по аккаунту


Патент USA US2113145

код для вставки
4mÀpril _5, ¿1938.l V
J; H. VAN wYçK
„ -.2,113,145
Fund July 14,y 195s
¿sheets-sheet 1`
April _5, 1938.
-.|. H. VAN wYcK
2,113,145 '
Filed July 14, 1936
2 Sheets-¿Shed?l 2
ïï’atented Apr. A5, 1938
John H. van Wyck, Mlàddlc Village, Long Island,
- Application .my 14, 1936, serial Nn. 90,473
1 claim. .(Ól. 155-111) ~This invention relates to chairs and has for bearing may be used. The strip 2d is secured to
its object to provide a reclining type chair which the forward portion of the seat'by the upstand
is self-adjusting vin response to the movement
l of the occupant. `Another objectis to provide a
ing post 21 through which a screw is passed ,
transversely of the seat, and also by a screw pass
f5 device of this sort which has the seat portion _ing through the hole 23 into the forward portion
pivotally connected to the tilted back so that the
_ seat may be moved forwardly and re‘arwardly as
the inclination -of the back is adjusted. A fur
ther object is to provide a simple and inexpensive
lo device of this sort which may be easily adjusted
with little friction. Yet another object is to
of the seat. As shown in Figs. 2 to 4, inclusive,
the metal strip 24 takes up` the wear of sliding
movement-of the seat and the guides 29 prevent
any lateral shifting of the seat, especially in the
forward portion. The guides 29 not only engage 10
the sides of the metal strips 24, but also have'
provide 'a pivotal connection between the seat ‘ overhanging portions 29a which prevent the seat
and back which may be loosened or tightened by
the occupant while sitting in the chair.
Referring to the drawings:
Fig. _1 is a, side elevation of a chair embody
ing this invention. >
Fig. 2 is a section on the li'ne 2-2 of Fig. 3.
Fig. 31s a top plan view of the chair of Fig. 1.
Fig. 41s a detail of the antifriction support
Vand guide, and end portion of the seat.
Fig. 5 is a front view partly in section of the
pivotal connection between the seat and back.
Fig. Q is a right side view of the device of
25 Fig. 5.
In Fig. 1, the chair comprises a back portion
il, having slats II, or other customary construc
tion, which is pivotally supported at 'I2 at the
being raised away from the cross base 25.
The pivotal connection between the lower end
of the back and rear of the seat includes on each `15
side a fitting 3| extending along a portion of the
back and also under the ends of the back at 32.
' Through this'metal fitting which is _secured to
the back by screws as indicated, is a recess for ,
reception of the pivot pin I4, which, in this case, 20
includes a flat headed bolt 33 which passes
through the upstanding projection of member
34, which is secured to the seat. A nut _35 is
threaded on the end of the bolt opposite its head,
so that on tightening the screw |4, the ñttin
3| -is clamped tightly between the seat support
ing member 34 and the nut 35. A projection or
wing portion 30 on the nut constitutes a finger
rear of the arms I'I. A seat I3 is pivotally con
piece by means of which the nut may be tight
30 nected at I4, to the lower end portion of the back . ened or loosened to control the ease of adjust
below its support I2. The front legs I5 and the ment between the back and seat. The move
rear legs I8, may be of the general shape indi
ment of the iìnger .piece 38 to the left in Fig. 6
cated. For supporting the arms I1 and back, effects a tightening or clamping of this pivotal
braces or props i6' are provided. Suitable trans
connection so tha't. the back and seat may be
38 verse braces I 9 and 20 reinforce the under-frame. maintainedin whatever adjusted position is de- 35
-A metal brace shown by dotted lines in Eig. 1 sired. - A washer 31 is placed between the lit
connects the brace I6, rear legs I3, and the sup
ting 3| and the supporting member 34 for the
port or pivot I2. A leg and foot rest 2| is piv
seat. It will be understoodv the clamping mech
- otally connectedat 22 to the front portion of the anism illustrated in Figs. 5 and 6 may. if de
4» seat, and is provided with a supporting` member sired. be used on both pivotal connections. be- 40
23, which is adapted to rock about its lower end, tween the back and seat, although'in the em
as the seat I3 is moved forward and backward bodiment illustrated, this connection is located
with changes in the inclination of the back.
A metal strip 24' is secured to the front por
4l tion of the seat as shown in -Figs. 2 to 4, inclu
sive. A cross or transverse brace 25 between the
upper forward ends of the rear legs i3 supports
an element having an arcuate anti-friction sur
face 23. ’I‘his member having such arcuate' sur'
I. face 26, is screwed or otherwise secured to this
cross brace as indicated. though, if desired, it
. may 'be made integral with the upstanding guide
23 which is secured by screws entering the holes '
3l 'd passing into the cross brace 25. Instead
Il or' t anti-friction surface illustrated, a roller
only on one side, as shown in Fig. 3.
In operation, the occupant may slt in the chair
in any position of its adjustment, and-after be- 45
.ing seated, control the inclination of the back
to whatever position is desired. _ By moving the
finger piece 33 to loosen the nut 3l, this pivotal
connection between the back and seat may be
loosened so that the back and seat maybe ad- 5'0
justed to whatever position is desired by merely
conforming the body to the desired position. As »
the back is inclined rearwardly, for example, to
the dotted line portion shown in Fig. 1, the seat
I3 is moved forwardly. The finger piece 33 is ß
conveniently manipulated by the chair occupant
without dimculty. Instead of having the adjust
able locking device applied to the pivotal con
nection I4, it will be understood- that it -may be
located elsewhere, such for example, as at the
pivot I2. The advantage, however, of locating
this locking device in the pivotal connection I4,
resides inthe ease with which it may be manip
ulated by the chair occupant who can conven
iently tighten or loosen this device, with one
hand, whereas it would be less convenient _to con
trol if-located elsewhere. If the leg rest 2| is
raised in the position illustrated in Fig. l, it will
be understood that this constitutes an extension
of the seat and must also be shifted forwardly
as the seat moves with the rearward tilting of
the back.
From the drawings it may be seen the pivotal
centers of the arms, legs and seat are so spaced
20 that the chair may be folded by moving the back
toward the seat and collapsing the quadrangle
formed by the brace I6, legs I8, upper portion
of the front legs I5, andthe arms I1.
A folding chair comprising connected side
frames, each frame including an arm rest, a for
Wardly4 inclined front leg pivoted to the front '
end portion of the arm rest, a rearwardly in
clined rear leg pivoted to the'front leg inter
mediate the ends thereof, a. rearwardly inclined
brace pivoted between the rear ends of the arm
rest and rear leg; a back rest pivoted interme
diate its ends to the rear end portion of the arm
rests, a seat pivoted tothe lower end of the back
rest, said seat comprising a frame and spaced
longitudinal slats therein, means slidably sup
porting and guiding the front end ofthe seat
comprising a cross bar connecting the upper ends
of the rear legs, vtransverse metal members hav
ing convex upper surfaces on the ends of said
cross bar, metal 'plates on the under side of the
seat sliding over the metal members, said metal
plates extending inwardly beyond the inner edge
of the side .bars of the seat frame and guide 20
members secured to the cross bar and having ,
vertical hooks extending over the inner edges o
said plates.
Без категории
Размер файла
282 Кб
Пожаловаться на содержимое документа