Improvements in Separable Pocket-camp-stools.
Year: 1889

page_text: Improvements in Separable Pocket-camp-stools.
I, HENRY LANG, of No. 52 State Street, Albany, New York, United States of
America, Manufacturer, do hereby declare the nature of my invention, and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement :—
Figure 1 is a perspective view of my camp-stool adjusted for use.
Figure 2 is a side elevation of the lower section with its swinging-arms folded, as
when ready for placing in a pocket.
Figure 3 is an enlarged side elevation of the central-posts of the two sections, part
of the lower central-post being broken away to show one form of the separable joint
of said sections.
Figures 4, 5, and 6 are modified forms of the separable-joint for the two sections;
and
Figures 7 and 8 are detached details showing different modes of attaching the
flexible seat to the swinging-arms of the upper section.
This invention relates to a pocket-camp-stool that is made in two separable
sections, of nearly the same form, which are adapted to be joined together to form a
seat of sufficient strength to sustain the weight of a person of ordinary size; the
separate sections being adapted to fold into a package of convenient size to be
readily carried in a person's pocket.
As represented in the drawing, A designates the lower section of my camp-stool,
and B the upper section of the same; both of said sections having swinging-arms (
pivoted thereto, and said upper section being provided with a flexible seat D that is
attached to the arms thereof.
The sections A and B are each provided with a central-post, E, made substantially
in the same form-excepting in the particulars hereinafter explained-and of a
cruciform cross-sectional area whereby ribs, 1, are formed at the opposite sides thereof;
on each rib of said central post of both sections a shoulder, 2, is formed to serve as a
stop against which the swinging-arm Cattached to said rib will engage when said
arms are spread apart, as shown in Fig. 1, to prevent an improper spreading of said
arms.
The swinging-arms C, which are preferably made of metal in a channel form of
cross-section, are pivoted, as at 3, to the ribs 1, and their projecting ends, 4, are preferably
made to engage with like projections on the adjoining arms so as to give stability to
said arms when spread apart for use; a shoulder, 5, formed at the pivoted end of each of said
arms, is adapted to engage-when the arms are spread apart-with the shoulder 2 of
the rib to which the arin is pivoted, thereby giving strength to the joint of said arm.
The free end of each swinging-arm is provided with a lug, 6, that is arranged at an
angle to the body of said arm; said lug, in addition to giving strength to the channel
form of the arms, forms-on the upper section of the stool a convenient point for
securing the flexible seat C thereto, and-on the lower section-a broad foot or bearing
upon which the stool will be supported.
The central-post E of the sections shown in Figs. 1, 2, 3, and 4 is provided with
a separable-joint which will permit the upper section B to be rotated on its vertical
axis, and said joint is produced by forming on the central-post of the lower section A
a socket, 7, for receiving a pivot-pin, 8, which is formed on the lower end of the
central-post of the upper section B; said pivot-pin is provided with a circumferential
groove, 9, into which a pin, 10-in the socket 7-engages to hold the two parts of
the joint together; as shown in Figs. 1, 2, and 3, the pin 10 is attached to a
spring, 11, which allows said pin to be retracted from said groove when the two
sections are to be separated; as shown in Fig. 4, the pin 10 is rigidly secured in the

page_text: side of the socket 7 and the pivot-pin 8 is provided with a groove, 12, which extends
from the groove 9 to the outer end of the pivot-pin, and which, when the upper
section B is turned to the required position, will allow the pin 10 to pass freely through
the groove 12 so as to permit the pivot-pin 8 to be drawn from the socket 7 to com-
plete the separation of the upper from the lower section. As shown in Figs. 5 and 6,
the central-post E, of both of the sections, has-at the end opposite to where the
swinging-arms C are pivoted-a V-shaped notch, 13, which has under it a
depression or groove, 14, made in opposite sides of said central-post, to form an
edge, 15, which approximates to a blunt knife-edge, at the lower end of said notch;
said edge fits snugly into a like V-shaped notch of the conjoining end of the central-
post of another section when attached thereto, and projecting points, 16, at each side
of said notch, fit snugly into the depressions of the central-post of an attached
section, and thereby a substantial inter-locking joint-that is readily separable, but
non-revoluble is formed when the notched ends of the central-posts of two sections
are fixed together end-to-end.
The seat-piece D is preferably made of canvas, or other suitable material, possessing
sufficient strength to sustain the weight of a person and sufficient flexibility to permit
it to be folded or gathered into a small space when the stool is folded up; said seat-
piece may be attached to the swinging-arins C of the upper section B-by rivets, as
shown in Fig. 7, by means of pockets formed at the corners of the scat-piece and
drawn over the lugs 6, as shown in Fig. 8, or by any other suitable means.
In applying my camp-stool to use the central-posts of the sections A and B are
interlocked in the manner shown in the drawing and the swinging-arms C are spread
apart as shown in Fig. 1.
To put the stool in condition for carrying in the pocket, the two sections are.
separated and the arms folded, as shown in Fig. 2.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. A camp-stool composed of two separable sections, of substantially the same form,
placed one on top of the other; each of said sections having a central-post of
cruciform shape to form a series of ribs thereon, cach rib having a swinging-arm
pivoted thereto, and each of said ribs having a shoulder or abutment with which a
shoulder of its attached arm will engage to prevent an excessive spreading of said
arms; said central-posts being joined, end to end, by means of a separable joint, as
berein specified.
2. A camp-stool composed of two separable sections, of substantially the same form,
placed one on top of the other; each of said sections having a central-post of
cruciform shape to form a series of ribs thereon, each rib having a swinging-arm
pivoted thereto, and each of said ribs being provided with a shoulder or.abutment
with which a corresponding shoulder on its attached swinging-arm will engage to
prevent an excessive spreading of said arms; said central-posts being joined by a
separable joint which is constructed as herein shown and described to permit the
upper section to revolve, on its pivotal center, when fixed upon the lower section, as
herein specified.
3 A camp-stool composed of two separable sections, of substantially the same form,
placed one on top of the other each of said sections having a central-post of
cruciform shape to form a series of ribs thereon, each rib having a channel-shaped
swinging-arm pivoted thereto, and each of said ribs being provided with a shoulder or
abutment with which a corresponding shoulder on its attached swinging-arm will
engage to prevent an excessive spreading of said arms; said central-posts being joined
together, end to end, by a separable joint, as herein specified.
Dated this 2nd day of April 1889.
HERBERT J. ALLISON,
Agent for the Applicant.