A See-saw (or Teeter).
Year: 1898

page_text: Date of Application, 17th Nov., 1898-Accepted, 23rd Dec., 1898
A See-saw (or Teeter).
We, RICHARD FRANCES HAMILTON, General Press Agent, 14, Kensington
Crescent, London, W., and GEORGE OSCAR STARR, Agent of Barnum & Bailey's
Show, 132, Addison Gardens, West Kensington, London, do hereby declare the
nature of this invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:
6
This invention consists of an improved apparatus to form a portable see-saw
or teeter" for children and is designed to produce a see-saw which shall be
readily adjustable to different heights, swivelled so as to be capable of horizontal
rotation as well as of vertical oscillation and which can be easily taken apart and
packed in. a small compass. The preferred form of the invention is illustrated in
the accompanying two sheets of drawings in which,
Fig. 1 is a perspective view of the improved apparatus.
Fig. 2 is a side elevation with lower part broken away.
Fig. 3 is a second side elevation taken at right angles to the one shown in
Fig. 2.
Throughout the drawings like reference figures refer to like parts.
1 is the base or standard having the upwardly projecting pin 2, located at
or near the centre thereof. This standard may sometimes be made of a heavy,
solid casting, but for a portable apparatus we prefer to make it in the form of a
light, skeleton casting, having a number of sockets, 3-3 etc., into which may be
introduced extension pieces, preferably timbers, which materially increase the
radius of the base without adding much to the weight.
The pin. 2, has preferably a conical point 4, and on this is supported a cross-
head 5, which has a cap bearing 6, fitting said conical point, and forming with
it a swivel joint for the swivelling upright piece 8, in which the cross head 5
slides, being held in position therein by the guide-lugs 7-7, etc. The swivel
joint thus formed is steadied by the collar bearing 9, which the swivelling piece 8,
has on the body of the pin 2. This swivel joint is vertically adjustable by reason
of the upright piece 8, sliding up and down on the cross-head 5, as above indicated.
The piece 8 is held in any desired position of vertical adjustment by suitable
clamping devices. The particular clamping device shown consists of two set
screws 10--10, which pass through slots 11, in the swivelling piece 8, and engage
threaded openings in the cross head arms. 13 is a horizontally extending swing-
ing piece journalled in the. upright piece 8, by the shaft 12, whose axis is
approximate to the horizontal plane. This piece is preferably made in the form
of a skeleton casting, and has sockets 14-14, into which additional extension
pieces in the shape of planks, joists, or other forms of timber, may be introduced.
These timbers shown in part, the rest being broken away, form the see-saw
'teeter," in the well known. way.
The sockets 14-14 may be in
line one with the other, so that their inner ends abut as do the sockets 3-3
etc., of the standard 1, but preferably we have them side by side as shown,
so as to form a longer bearing with a given amount of metal in the piece 13.
or
6
"
The piece 16 is similar to 13, and similarly mounted, except that the axis of
its shaft 15, is approximately at right angles to that of shaft 12, and conse-
quently its sockets 17-17 are at right angles to those 14-14 of the piece 13.
The method of operation of the invention is evident. The apparatus being

page_text: "
assembled as shown, the extension pieces are introduced into their respective
sockets and the see-saw is ready for use. On their removal the apparatus can
conveniently be transported or stored. On loosening -the set-screws 10-10, the
apparatus can be adjusted to the various desirable heights for children of different
sizes. By reason of its swivel or pivot-joint the apparatus can be used as a
merry-go-round, by giving it horizontal rotation.
"
It is evident that one or the other of the swinging pieces 13 and 16; might be
dispensed with, or that three or any larger number might be employed. In the
latter case, the axis of their shafts should be spaced at approximately equal angular
distances apart.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
sha
.
34
**
1. The combination of the standard, the upright piece 'swivelled thereto by a
joint which is vertically adjustable, and the two horizontally extending, swinging
pieces journalled. in the upright, on independent axes, which, are approximately
horizontal, and approximately, at right angles, each to the other, substantially as
described.
"
2. The combination of the standard provided with an upwardly projecting,
conically pointed pin, and a swivelling piece provided with a cross head having
a cap bearing for the front of said conically, pointed pin, and a collar, bearing
encircling the body thereof, the cross-head being vertically adjustable in, the main
body of the swivelling piece, substantially as described.
3. The combination of the standard provided, with, an upwardly, projecting,
conically pointed pin, and a swivelling piece provided with a cross-head, having a
cap bearing for the front of said conically pointed pin, and a collar bearing
encircling the, body thereof, the cross-head being vertically adjustable in the main
body of the swivelling piece, together with the two horizontally extending, swing-
ing pieces journailed in the upright or independent axes, which are approximately
horizontal and approximately at right angles each to, the other, substantially, as
described.
I.
1.
a
4. The combination of the standard provided with an upwardly projecting,
conically pointed pin, and a swivelling piece provided with a cross, head having
cap bearing for the front of said conically pointed pin,, and a collar bearing
encircling the body thereof, the cross head, being vertically adjustable in the main
body of the swivelling piece,, together with the two horizontally extending, swing-
ing pieces journalled in the upright or independent axes which are approximately
horizontal and approximately at right angles each to the other, each of said
horizontally extending pieces being provided with two parallel passage ways
therethrough for the introduction of additional extension pieces, substantially as
described.
41
5. The combination of the standard provided with an upwardly projecting pin,
a swivel piece provided with a cross head having a cap bearing fitting the upper
end of the pin and with a collar bearing encircling the body thereof, the cross
head being vertically adjustable in the main body of the swivelling piece, and a
horizontally extending swinging piece journalled in the swivelling piece on an
axis approximately horizontal, said horizontally extending piece being provided
with sockets for the introduction of additional extension pieces, substantially as
described.
11
1741
1000